What type of clowns do you have?
This is the question that should be answered before you buy anything. Most clowns are anemone specific.
this has not been my experience. most clowns in captivity will take to an most unnatural host anemones that they normally wouldnt in nature. For example, Percs and BTAs...doesnt happen in nature, but happens all the time in captivity.
My A. Nigripes will jump into anything that somewhat resembles an anemone.
If that works in your case cool but i have 3 bubbles in my tank and my percula has no interest in them either does my saddle back. In nature though most clowns are anemone specific and its a good idea to give the clowns the proper choice of home IMO.