I wrapped my grip with a tennis racket (rubber wrap) handle material. It was great, no slip, comfy, but it made the handle a little fatter than I really liked. I am kinda picky about the handle of my bows .
That idea using the stair tread stuff sounds interesting, or maybe I will break down and stipple part of the handle.
There is also a guy nearby that does laser work on most any material. We discussed this and he could do it for a fair price and his results are incredible.
Many choices
ChuckC