Yeah Quest 3 is not even out yet. Ok I get what you are saying, I just use the regular Kneeboard. I use Kneeboard Builder to import my files into the kneeboard and view them in the headset as needed. For instance on using say a certain weapon in the Hornet, I have those particular kneeboard pages ready at the go for reference viewing in the headset if needed. Works pretty good for me. Start up procedures per aircraft I do the same, etc.
I have flown several campaign in the Hornet, Spit, and now working on some in P-51 and have not needed to raise headset to look at anything.