Any of you guys try the worksharp electric knife sharpener.  With abrasive belts and variable angle blocks It looks like it would work great for 2 blade broad heads.  YOu might even be able to do single bevel heads on the scissor sharpening angle guide.  

I was playing with one at a local hardware store and thought It looked like a winner.

Any first hand experience with them?

I played with one at a local sporting goods store. I tried it on a swickey eskimo and it worked very well. Thought about buying one but didn't really need it.