Very possible, they will host a lot of things. Although anemones are difficult to keep, they are more 'hardy' when it comes to the grooming habbits of clowns when they are hosting. Opposed to corals which are a little easier to keep in terms of water conditions, but a lot of corals won't last long-term with hosting. I'm not saying they won't, i'm just saying it is less likely for survival unless it gets used to / accustom to the grooming.
Just keep an eye on it, i've lost a flowerpot coral because of a clown hosting, and i've read a few stories of other people losing softer corals because of hosting.