QuickFinder Clipper: anyone use this?

I was browsing around online for kitty products (brushes, nail clipper, etc when I came across this QuickFinder Clippers.

http://www.petacular.com/products/Qu...r-Clipper.html

Has anyone ever used this? I'm always nervous of hitting the quick when I do my dog's nails, so they are usually cut nowhere near how much the vet does (vet has done them once).

I know the cat's quick is easier to find, but this clippers if they work well, would safe any potential problem.

We have those at the pet store I work at and no one ever buys them. I always look at them but for that price I will not buy it.