I'm not so high on this guy, it seems he gets a ton of attention because of his offseason tribulations more than his on the field efforts. I'm sick of hearing about him in fact.
I think you need to see him play more. He just makes plays. He intercepts passes, he causes fumbles, he recovers fumbles, he tackles and he returns punts for TDs. Will he be a great player in the NFL? Maybe not, but he would be excellent depth in the secondary and a good special teams guy. You don't often times get much more in the 3rd or 4th round.
The only real question mark with him are his character concerns. Which are admittedly serious concerns.