I'm IS and Milwaukee is a great place often overlooked by OOS'ers which is usually fine by the by locals. However, Milwaukeeans and Wisconsinites in general are friendly welcoming folk. As for MCW, most people find it a very relaxed atmosphere and they seem to put great emphasis on choosing decent, friendly, cooperative people for their student body. Top grades and scores and experiences may get you no where at MCW if you're attitude isn't quite right. This is conjecture as I am not a current student, but I've heard quite a lot from the horses mouth. Best of luck to everyone applying here!
And, yes, Californians, many students from CA go to MCW. I was there for an event with current students and there were a ton of CA natives in the student body.