I've been watching and reading about the zipper wand for quite awhile now. I currently clean with a RotoVac PowerWand, RX-20 and a T-REX. I never have nor do I want to clean with a wand. But the zipper wand does look interesting. I'm interested in hearing from people who have used the zipper while owning any of the above rotaries. Comparisons? Thanks for your replies!