I probably wouldn't peel potatoes this way, since it uses so much energy to get it done...(yep, I'm one of those green freaks).
My DH bought one of those silly gadgets on a show once. It's called the Rotato...has a little blade that peels your potato, apple, etc by sticking your veggie/fruit on a spike and turning a crank...it actually works very well, and uses only human energy...he loves using it. He's weirder than I am