It's hard to judge a whole AP from just part 1 BUT . . I'll admit I don't like the evil AP. But this part was the usual well written and lavishly illustrated thing that lives up to Paizo's standards. And it does stress party unity and working together. Not letting it degenerate down to all the players killing each other. And it is not "I'm evil lets kill things."
It looks like fun! So yes I am strangely starting to like it!
Aren't ALL DM evil? :)