MMMMMMMM, interesting idea. I have used pewter on horns lots of times. But I honestly do not think wire inlay would work because there is no wood grain to "grab" it. But it would be worth a try and we would all learn something.
I am also not sure what kind of tool would be used to cut the line, maybe an exacto knife, but here again I am at a loss.
Good luck and keep us posted on howit goes.
Coryjoe