Demps is absolutely deadly in limited doses. He's very prone to fumbles, but on screens and deep passes (when he sees fit to actually catch the ball) he's a monster. I love using him against Cover 2s as the HB in a shotgun set which sends guys on corner routes in either direction, and then sending him straight downfield out of the backfield. Either one of the safties bites on Demps and gives you an easy pass to the guys on the corners, or they each take a corner route and Demps flies down the middle with some poor middle linebacker trailing 25 yards behind him.