Today I've updated to the newest Kubuntu release 20.10 and considered switching to Wayland, but then abandoned the idea when I found out that middle click copy paste is only implemented in Plasma 5.20, and I only have Plasma 5.19. I've seen they've fixed the screenshot program though (which I remember to have been an issue on older versions). I'm looking forward to 21.04 for my next attempt to switch, maybe by then F…
All GTK3 apps runs well on Wayland too. Qt apps runs well but it doesn't feel as polished (I mainly have issues when I use 2 screen with different scaling).
The last big things are chromium and electron. Once those have ozone merged and enabled in stable, it's gonna be a massive step forward. Those are the last apps I can't run natively on wayland. Ozone is in the beta branches now so, hopefully, it will happen next year.
After, it's not that much of a big deal to run those on xwayland as long there's no scaling. As soon as you're on a hidpi screen or just use scaling, it's when it becomes blurry and is quite annoying. I personally still prefer wayland over x because the experience is just better. No flickering, it's smooth and feels more snappy.