Actually, lonestrider steals a lot so they do have something...
I don't think getting gems as reward is something Neji will apply though...
In my opinion, exp is a good idea...
Well. If I stole your avatar from you, it would be because I didn't have that same one. >> Horrible analogies aside, lonestrider, the person I would imagine to have all the gems, leaves, so your target is gone, which could mean no exp or rewards.
His gang is a bunch of followers, so obviously nothing from them.