One thing that I look for in a running back is toughness and durability. I don't know if this has been mentioned, but if you look at Ga Tech and their triple option you will see Dwyer getting hit on every play. To defend that triple option you have to tackle the fullback because they will either fake or run that fullback dive on every run play. Dwyer plays the fullback in that system and he is constantly getting hit. It shows toughness and a willingness to do what it takes to win when a talented back like that doesn't complain about being the guy who gets hit on every play. It takes a special back to keep a defense so honest on that triple option. If you don't tackle the fullback against Ga Tech, Dwyer will kill you all game long.
One downside to that offense for Dwyer's transition to the NFL is pass protection. He usually stays in to block on pass plays, but Ga Tech rarely throws the ball. He looks comfortable in pass pro, but I am sure scouts will look at his inexperience in it when evaluating him.
Anyway, I thought it was worth mentioning.