Had a mixed pair of sandaracinos and akallopisos hosting in mertensii, crispa, haddoni, and multiple BTAs. They did not seem to care, they just wanted a big healthy anemone in a prime feeding location. They would push other pairs out while they were the dominant pair in my 300gal.
fwiw: Lots of predators in that tank, clowns never hesitated to find whatever host they could.