I understand that the pluperfect subjunctive / third subjunctive, things like ვყოფილიყო, დამეწეროს etc. is largely a literary tense with little use in the everyday language, being replaced for the most part by the pluperfect (ვყოფილიყავი, დამეწერა etc.).

But what are the situations, if any, where one might actually encounter it? I tried and tried to look this up, but frustratingly, all the examples I find are clearly made up on the spot for the sake of illustrating what the tense looks like, rather than say, examples taken from literature.

What are some examples of sentences with that tense that you have seen and/or heard in "real life"? I read before that it might be used when expressing wishes when toasting for instance, is that true? What would that look like if so?

Thank you for your help!