I don't know that he'll ever hit for power. But I'd bet anybody $100 that Stubbs will have a 20 HR season before he has a .280+ average season -- unless they happen at the same time. And if he's not hitting .300, the Juan Pierre approach is a recipe for disaster.
I'm not saying he will succeed. I'm saying that if he does succeed, it will be in the mold of Cameron, not Pierre. And he should be handled accordingly. Leading him off is not putting him in a position to succeed.