I really like it, but may I suggest that the “abuse” of the metal might be “a bit too much?” It suggests damage in areas – such as the side above the handle – which probably wouldn’t experience damage while in (ab)use. This might be a case where “a little less, is more.”
However, I do think that the metal texture itself is very nice and believable – as is the wood, the handle in general, and the idea of wrapping rope around the grip. This is a solid, very believable, apparently well-used, claw hammer.