While it's certainly not out of the question for Quinn to get a shot at the end of someone's bench, I do think the key difference between Quinn and Lance / Andre is that Quinn doesn't have any one elite skill that will makes him valuable to an NBA team. Lance was never much of an offensive player at Duke, but he was an extremely good / versatile defensive player by the end of his career that can now do a pretty good job defending NBA 3s and 4s. Andre, though streaky, obviously offers elite 3 pt. shooting talent. Maybe Quinn's emergence as a defender as a sr. may portent his use as an end-of-bench scrappy PG, but I am not sure if that will translate to the next level when he suddenly faces significantly better athletes -- i.e., I think you need to be a lot more athletic than Quinn to carve out a niche as a defensive stopper. Though, you never know. Crazier things have happened -- e.g., see Shavlik Randolph still hanging around the NBA years after Shelden Williams left for Europe.