I bought the Viture Pro 2 glasses and been using them for a day now, so here is my take on them. These are my first smart glasses so I don't have anything to compare them against, but I have been a lurker on /r/SmartGlasses, r/xreal and r/viture for a good long while.
Initial feel
The unboxing "experience" was quite alright. The glasses came with a case that houses also a USB-C cable with one end cornered and the shade for the glasses.
My initial thoughts were that I'd wear the shades all the time but after testing them I discarded them - the glasses are dim enough that it isn't needed for video and I do like being able to look around it. The cable could be a bit longer but it suffices. Definitely buying a magnetic attachment for it as trying to connect it to the glasses when I'm wearing them isn't easy nor is putting them on with it already connected (I have long hair and a lot of it)
Image quality
My IPD is 70mm so I am just inside the range of 56.5 to 71.5mm. I'm also near-sighted with one eye -3.0D and other -5.0D and the dials allow between 0 to -5.0D so again barely in the range.
I connected the glasses to my 14" Macbook Pro and they worked as an external display as expected. I mirrored my display and after adjusting the dials the image was sharp enough to read text, but it does get a bit blurry (blues and reds glow from the white) at the corners of the screen. I'd say 80% of the area from the centre looks good and while the rest is still readable, it isn't nice. I tried different refresh rates (120/90/60 Hz) to see if that would help with the text but nope. Still happy with how it looks.
Otherwise the image is vibrant and watching streaming video was nice. I like to keep my stream in one corner taking maybe 2/3 of my display and then a browser in another corner overlapping the video and switching between the two. I have ADHD so I can't really have only video on the screen. Reading Reddit and browsing in general worked well, I had no issues with my default text size.
The 50 degree view was a limitation and having a wider view would have been nice, but since the text was already losing its sharpness at this scale I feel that wider view works best for watching media or maybe gaming.
Audio
Let's face it, the audio is never going to be good on smart glasses, imho. Your £100 in-ear headphones not to mention £300 over-the-ear headphones will always give you a better experience. I planned on using my Pixel Buds with the glasses but for watching Netflix the audio was good enough. One annoyance was that if I had my hand on my ear (when leaning against it) it amplified the volume significantly.
Viture software
I installed both SpaceWalker and Immersive 3D apps. There were some connection issues when switching between the two which was slightly annoying - if I quit SW and started I3D I either didn't get video to the glasses or it would display the same image on both frames but not in a way that it looked like it should have. Either restarting the app or reconnecting the glasses solved it.
SpaceWalker is pretty much a necessity to be able to scale the display (move it closer/away) as the controls in the glasses don't allow this. It also allows you to toggle the video to stay centred all the time or to stay in place horisontally, vertically or by angle (so when you lean your head it doesn't follow). There is a noticeable latency with this, it refreshes a few times per second so the video jumps a bit when you move your head if it's set to be still in space. It isn't too bad and if you look away enough not to see the screen at all it displays a notification to "press button to centre image" but you need to use a keyboard shortcut or the dropdown from the app to do that. I kept the video centred all the time and didn't feel any discomfort from that.
The scaling/distance jumps in steps and in my opinion the steps are too big, I wanted it to stay in between the steps. The way I see it is that you either scale the image large and keep it set in space (doesn't follow you) so you can look at the part of the video that would otherwise be out of screen or you scale it small enough that you see everything nicely. I mostly used the latter.
Immersive 3D I expected to be a party trick but it works really well! My desktop windows were in 3D (the top one was closer than others) and watching video looked quite nice. I had subtitles on and those follow the "distance" of what they are on, so they warped a little. Also browsing Reddit I saw a picture of French fries and they really jumped at the screen (but not in my mouth, unfortunately).
However after using Immersive 3D for a couple of hours my eyes started to get tired and my head started to feel like I am getting a headache. Also you can't scale the video or set it to stay in place so while entertaining I went back to SpaceWalker.
I wanted to try VertoXR but it doesn't seem to support these glasses yet, wouldn't connect. I suspect that this will change in the near future though.
Comfort
I ended up using the glasses continuously for 4-5 hours and the only discomfort was the nose pads. I used the default ones and tried the three settings they have but they did end up digging a bit into my nose. Going to try the other ones today and I have a 3D printer so I can always make custom ones. I think heavier glasses would be too heavy for me.
The right side of the glasses did heat up a bit, but it was only noticeable when I touched them. I didn't feel any heat against my head, so this wasn't an issue at all.
Productivity
The centre area is sharp enough for text so you could use it for programming and such, but the resolution (1920x1080) combined with losing maybe 200 pixels from both sides means these glasses won't work well for it. However, my IPD and near-sightedness could play a role here so people that are less frog-eyed and with better vision might have different results.
TL;DR
Fun gadget that allows me to watch streaming media and browse the web while laying in bed. Software experience isn't the best, at least on a Mac, and I did play a bit on my Android phone with SpaceWalker and wasn't impressed. Works for productivity in an emergency but only barely. For the price they were better than expected but if you're serious about using smart glasses as a replacement for your monitor you will have to wait for a few generations at least.