The only problem i've had with it Unity on Ubuntu (and other apps in general) is the high resolution makes it impractical to develop with. Granted I've since bumped down the res for my laptop to 1080, I think it's a general ubuntu issue.
do you use a full Windows machine or a vm?
@theeternalpulse dual boot, although I should probably see if Unity works in wine
ah, yeah I'm still mucking around with 2d stuff in Quil before I jump to Unity, didn't really get the arcadia stuff to work beyond a simple case