I have backed it. I backed it mainly for the miniatures. We play a lot of Shadows of Brimstone, and soon plan on trying our hands out at Deadlands (Savage Worlds Weird West RPG). I expect a lot of the minis will be used in those games, even if we never actually play Zombiecide.
I have backed a scattering of other CMON KS (I think this is my third), and they have all been good value for money overall... if you paint the figures! I do not have a great record in that regard, alas. Although so far this year is looking up.
-Michael