@RadiantBlack I can confirm the base game runs flawlessly on Linux. Personally I use the xivlauncher by goatcorp, which brings its own wine version and handles the nitty gritty for you.

Only when you get into modding, advanced posing, or combat tracking, it can get a little tricky, since all these third-party tools are developed without Linux in mind. So you're probably gonna be limited to a more or less vanilla version of the game.