Just bought it, 1st video was entertaining, 2nd video sold me (especially when like 6 guys died to a since trebuchet ball). I've loved the idea of that kind of combat, but I haven't found a game that has done it right or felt right yet. Chivalry on Steam was pretty fun, but so Rock, Paper, Scissors like. And Mount and Blade was decently fun, but just felt like something was missing, I loved their melee idea, is a great concept, but pulling it off in combat is not very easily done.
This really does look epic, so I hope it is, will post back later with what I think.