Anyone with ears-on experience with earphones that use hooks to keep buds from falling off?

I saw new Aurvana Air earphones today and wonder how well these ear loops are? Any idea?

Product info:
http://www.creative-aurvana.com/

I like them better than earbuds.

thanks, but are they comfortable? I mean the hooks that keep the buds from falling off, and do they really work i.e. keep the buds from falling off?