i doubt the clown would let the sexy into the anemone.....i have had them in the same tank so its not a problem to my knowledge, i never had an anemone at the time either...my sexy shrimp stayed with the pulsing xenia.
So it is likely that the shrimp will find something else to "host"?
How do you like the sexy shrimp? I have always wanted some, but am afraid they will dissappear quickly...
I have had several, last one I had I gave to renogaw because my cleaner wouldnt leave it alone. But it hosted every thing, xenia, hammer, shrooms... and my BTA. But I agree if you have a clown hosting I doubt it will let the shrimp near the anemone.
The only issue I can see is if they all decide to host the same thing. Especially an anemone, this could cause stress to the anem, make it try to move around, or stay closed. As far as corals are concerned I would say the same for them as far as staying closed and just irritating them. But, then again it may not be an issue at all.