I think he has with the bat, but there are probably better defensive options at the positions he plays best, 2B and 3B. I want no part of him in LF.
The one thing he does provide as a backup is a competent backup at 2B and 3B. He can reliably be cycled in and out of the lineup at either position, plus DH and be a good bench bat when he's not playing. He should get plenty of playing time that way with the way Rocco rests players. That's not a bad thing, IMO.