I think overall Hambone has been a 'plus' acquisition for the Brewers. He has sparkled on defense at times but has made some errors, too, that make you wonder. According to FanGraphs, he has a +6 DRS in 577 innings at 3B, his main position this year.
Add 32 SB out of 39 tries (82.1%) and that makes him a valuable performer for this scrappy Brewers team. Heck, Rickey Henderson had a success rate of 80.8% over his career, so Hambone is in good company.