I'm a Notre Dame fan but there are things to be scared about when coming to Floyd... And I don't really think the off-the field concerns are an issue either.
The biggest issue with him is injuries... The constantly gets injured and even when he's not getting injured it seems like he gets up extremely slow after any legitimate impact. Players like that typically don't make out too well in the NFL. Even last year in the bowl game when they needed him most he wasn't playing... Years before that he's missed several games in each one of those years as well.
Same with RG3... The guy is a great personality with amazing talents but concussions will absolutely be an issue for him. I wouldn't even draft him in the 1st.