Has anyone used this yet?

[sickpuppy1]

I realize that alot of knock off's come from here, and I cant condone that. But this seems to have a new twist in that it has an adjustable or moving back. If it can be free floating it would always keep the blade at the proper angle, which intrigued me. Thoughts?
Chinese knockoff of "EDGE pro Knife sharpener with Slider Aluminum alloy body APex Longmen system KME sharpener"

 

[knarfeng]

Closed.