"False" Perc (Ocellaris) are much more likely to take to a "substitute" host than are true Percs, as bizzybeas mentioned.
One of the most commonly hosted corals by clowns is the Toadstool, but I'm not sure how the Percs might take to it. The clowns do not "need" an anemone or any other type of host to thrive in captivity.
As far as the Elegance coral goes, they are a beautiful coral, but have a pretty poor survival record these days in the hobby. I would research it throroughly before considering a purchase.