Jason went 13-0 (and got robbed not getting to play for a natn'l title) in this offense in his senior year at Auburn, and continued to learn a version of it as a rookie with Bill Musgrave. So it's a much easier transition than, say, a certain 700 page playbook.
JC looks great so far. He's using his check-downs well too. I'm pretty sure Zorn is gradually rolling out the plays in live action. I'm not too concerned about the lack of deep plays thus far. We're working the sidelines and the middle of the field equally well, and the run game looks very good. Save for the rookie WR injuries, I'm very pleased.
Jason has all the tools- He's unflappable, he's becoming a leader, he's tall, mobile, and has a friggin rifle arm, and most importantly, he's got the work ethic. Plus he's only 26. The sky's the limit. I just hope Jansen can keep DE's out of his face.