my first reaction was negative. mainly because it's a bit startling and off-putting. then i thought, hey, the guy lost his arm and he's making the best of it. to me, calling the tattoo disgusting is insulting to the amputee. it's really his call. if it's hard for us to look at, then that's our problem, not his.
http://www.worleygig.com/2009/05/shark-attack-tattoo/