Yes I have a pair of Ocellaris (one tank-raised and one wild-caught) hosting my bta.
I also have a pair of Tomatoes that host mushrooms.
They'll host whatever they feel like: corals (torches, bubbles, mushrooms, xenia, star polyps, etc.), sometimes they'll host a rock or even a powerhead.
There's no guarantee that your clowns will host any anemone you get them.