I've heard of it, but never used it. It's been on ebay a lot lately, glad to hear that someone is having some success with it, and it's not just a gimmick.
I have had it for about a year now - not all that impressed with it but I use it on my wheels and it makes em purty - seems to me that it contradicts itself as a product - says it will remove any other products but builds on itself (like layering)...odd that it takes off everything but itself :lol