I honestly think that Gregory is the safest of all the OLB prospects, at least on the field. I cant predict how he'll handle the drug problem, but I think he has the lowest floor of all of the top rated prospects mostly because of how well he plays the run and can set the edge.
As far as disappointments?
Ill go with Shane Ray, Andrus Peat, Vic Beasley, Trae Waynes and Bud Dupree.