This is awesome, I'd love to see a version with little padlocks with little locks and big rings as 'piercings' including a huge one of the front as a nose ring.
I've just got grow-ring and grow-loop in graphite mapped to keyboard shortcuts, it speeds you up like 800x. The graphite/polyboost ones are useful because the ring/loop and grow ring/grow loop selections work on any type of selection, not just edges.
I think the rings are completely plausible and a good addition to the piece. The problem is that the horns don't have anything to show that the rings are penetrating. They sort of just overlap.
Is there a mel script or easy way of selecting every other edge on a ring or loop like the dot loop function from polyboost/graphite tools in max? I'm using maya 8.