For what it's worth, a few years ago I was able to successfully run Xfce, LXDE, GNUstep, parts of GNOME, and even Plan 9 from User Space.
Since then things have regressed. At one point Xorg was failing to find any displays at all, lately it's been starting just fine and displaying simple windows properly, but it's unable to take any input from my mouse and keyboard, so it's still not usable. Sergey