I've installed it on most of my forums and I like it - but I have to probably wait another month or so to get new themes. Brivium hasn't updated the free themes. Anyway, the mods and themes available now, in general, are very lacking, but of course, that should change drastically.
Note: XF has officially approved the 2.0 download about a week ago; before that it was beta.
Well, an update here. I generally like it, but the email stuff is frustrating. Basically, it doesn't work. In that case, it's highly tempting to stay with XF 1.5.16 - cause it literally has no problems.