I had thought it was what it is before posting but it was only $5 in the LFS so I thought it was to cheap to be it. Clowns have been leaving it alone, don't think its bushy/tentically enough for them to bother it. I lost a torch frag from my female clown previously, and the smaller male sometimes goes into the xenia but thats to hardy to kill as long as its secured to the rock good.
Zoa's, shrooms/ric's, polyps, leathers are all easy corals that clowns won't bother or are hardy enough to take it. Just make sure they're well secured to the rock.