For the majority of the season, I expect Humphrey to be an impact player, coming on with 20-30 minutes to go and causing havoc with his pace. At some point I'd like to think he will have a purple patch like most wingers and CB will have no option but to give him a starting berth for a few weeks.
If he continues to work hard, he has the potential to be an Ivan Sproule type player. Like Sproule however, I doubt he will ever offer a degree of consistency.