Decisive, is how I'd label him, with very good arm talent. He has some mechanical issues, and he makes some bad decisions under heavy pressure, but man, he hits the open guy.
I agree with you on his mentality, which is a major plus for Hundley. He stays even keel, until they score, then he celebrates. I watched one game where he got sacked on every down on 3 straight possessions, none of them his fault, he had no chance to run, or get rid of the ball, and he didn't hang his head, complain, or get down. The next possession, they went about 85 yards and scored a TD.