I didn't know electric knife sharpens that work existed. I'd certainly try it out on crappy knives I didn't care about. I use wetstone with water and I can't imagine them being any sharper, but it would be nice if my wife could sharpen knives too. I learned as a kid, my dad would give me a dull knife, tell me to sharpen it, critic it when I was done, then run the edge over the sidewalk or garage floor and tell me to do it again. Not the best way to learn, but I can sharpen anything with an edge. Sometimes we get lucky and have an apprentice butcher in the area who will sharpen knives for 5$ each to get the practice. I believe the place that teaches them suggests ( or requires ) them to do this for experience. They are fast and good.
With that being said, I'd like to try one of the sharpeners people are posting about. Love to see one that worked.