Cutpurse is interesting. I think he's very good to drop in the first few turns or in combination with removal. If he lives a turn, you get +1 mana and combo turns on for every card you've got. That's really strong. But, if you play him early, he's weaker than average stats and suffers from the same problem as pint-sized summoner: you need to stick him for a whole turn to do anything. So, I'd say no, go with the Argent commander. Way more consistent.