All clowns will look good in an SPS tank its just the host anemone you have to worry about. Well not true regarding GSM's, they tend to knock things around, period. SPS cant move and the anemone can. This often leads to problems later when the anemone decides to move and find its home next to your cherry SPS stinging the crap out of it. Its the chance you take. If you have a large enough aged and stable tank you can try a Haddoni carpet, which tends to prefer the sand.