IMO, Bryan has a low ceiling and a high floor. He is a one-cut-and-go runner who gets upfield in a hurry. His speed and burst are not a problem.
He's not a creative runner, which limits his upside, but he can get positive yards and fits with all the zone runs we call. If Brown doesn't trust his depth, I think it's a smart take.
One more thing- I don't believe in the "he's taking up a valuable scholly" argument. Clearly, we planned on taking two backs in this class. If we recruit better players in the future, he will go somewhere else to get carries. There are too many good players in South Florida to have depth issues. It's smart to bring in quality local guys to plug any unexpected holes.