This brings back fond memories of messing around as an admin on the Lunixmonster PVK server and accidentally causing a huge crash because I set the friction to a value greater then one.
I just got to play this for myself last night. It's probably the most fun I've had with a sword game in a while. It plays like crouching tiger hidden dragon and as long as you don't have archers running around, it's really great. Free-for-all pvp is REALLY FUN, especially on the arena map. Kicking guys into spike walls? Fuck yeah. Highly suggest it.