Its cheap enough to try, has any1 used one yet?? Heres the website for it. I saw it on a tv spot, a billy mase-esque spot, comes with a free sontoku knife they show being sharpened (wish i got the number lol)
http://www.furitechnics.com.au/Ozitech/ozitech_main.html
http://www.furitechnics.com.au/Ozitech/ozitech_main.html