He's played a good couple of games, but he hasnt shown himself to be any different from before really. He's made less stupid mental mistakes, and played more within his limits, but he hasnt improved skill wise.
The bad...He still doesnt have a reliable (or confident) jumpshot, he's still prone to getting blocked, he's still not a good (nevermind great) passer, and he still hasn't shown an ability to consistently run plays and create in the halfcourt. Maybe most importantly though...he still doesnt have a position (IMO). He isnt a good enough dribbler or passer to consistently and successfully run an offense, and he doesnt have the size to consistently guard opposing shooting guards
The good...He's a lockdown defender against other small players, and can create real issues for any less than elite ball handlers coming up court. He has the speed to be a threat on the break, and has the athleticism to finish. He plays the passing lanes great on defense, and is also a surprisingly good help defender.