I picked it up on PC because Valve took the time to make sure the game ran Day 1 on Linux, and I very much felt that was something worth supporting.
I did give Cyberpunk a quick bash - didn't really encounter any obvious glitches. My only complaint is that there was this weird smudging/ghosting effect that was doing mad stuff like causing peoples face to melt a little bit when they move their head, and parts of the environment it looks like the film grain didn't fully disable and would smudge whenever I turn... Honestly I can't really describe it, and it's not something I've ever encountered in a game before. Really it just felt like I was tripping balls off stamps. I think it's really just an issue with premature support in Proton maybe, so I imagine it'll get sorted soon enough.