Given how much of this issue was revealed in advance, I wasn't wowed - felt like a necessary going through the motions. But it was decent. The art's lovely.
I didn't dislike Bendis' writing as much as I'd feared, but I will say that characters with distinct voices like Beast and Storm definitely sound less distinct (especially Storm). Hopefully Bendis gets the hang of it. He needs to be really careful with Cyclops, too, as others have noted. He - and the whole premise of conflict - becomes a lot less interesting if Scott drifts into old-school mutant superiority territory. Hopefully there'll be a third, Brotherhood group to clearly distinguish Scott from 'conquering humanity' types, so we end up with:
The School = live and let live
Uncanny = fight for your right to be a full equal
Brotherhood = kill them all!