When I last checked in on Linux running on a 2-in-1 a year or two ago it wasn't good. There are some minor hardware issues with Surfaces specifically (webcam and some other random stuff doesn't work without a ton a work) but what really killed it was the X/Wayland mess. Had tons of showstoppers in tablet mode because some applications wouldn't recognize the OSK, or would trap me in an dialog until I grabbed a mouse and keyboard. There were some distros who's login screen was unusable when touch only as well, but I'd have to dig up my notes to remember which one. Might be time soon for another tablet experience roundup now that there's a new Ubuntu LTS out.