Yeah Clarkii clownfish are pretty much guaranteed to host pretty much anything.
If you buy either percula or ocellaris, they'll be tank bred, and won't show much interest. You might be able to get them to go in the anemone in time, but it's not guaranteed. I've got two big bubble tips, and had two large H.Magnifica anemones and while my Clarkiis dived in straight away, my two ocellaris haven't so much as sniffed an anemone.
You're best buying a clown / anemone "package". Look for someone selling two clowns with their anemone they already host.
There's a chart of which clowns are most likely to host which anemones.http://www.fishlore.com/clownfishanemonechart.htm
As you see, little A.Clarkii buggers host every anemone, but some clowns are fussier.