IMO, I think an LPS coral is a worse choice than an anemone for clownfish considerations, but I am no expert, and have never owned a clown. Now for general tank stockings, I agree, I think LPS is better than anemones due to the higher anemone mortality rate in captivity encountered by many aquarists.
Jumpfrog, I would be very interested in updates about how your bubble fairs with the clown in it. It is a very interesting topic to me.
Cheers all,
kris