The fumbling I didn't know about him and that would be my biggest concern on him. Along with the knock that he doesn't like to play hurt.
As far as blocking goes I don't think they're going to be looking for him to do that, cause Barber isn't a bad blocker. He could get better, of course, but he's not a bad one.
I would like to know that he'd at least try and do some blocking though. That's disheartening to know.