Just watched him play vs portland and I gotta say he really has a good eye. Unfortunately he makes some bad judgement/turn overs, his ball handling is sub par, occasional terrible shots and his confidence in himself is also not so great.
Still, I don't think houston would have won the game without him on the floor against the blazers.
Overall though I think once he gains more play off experience he will turn into a serious threat. Possibly the next rondo/chris paul or steve nash.