Bionic Gym or other muscle stimulators for burning calories?

Hey guys, I have a question. A few years back I went to a therapy place where I would occassionally use their FES bike. They would hook these stimulators up to different muscle groups on my legs, and then strap my feet to the FES bike. The stimulator would cause my muscles to contract, and I would push the pedals on the bike. Even though I can't actually feel or control my legs (I have a complete injury), it was quite a workout. I would burn a lot of calories and be exhausted afterward.

My question is, do you guys think this same process might work with a product like the BionicGym?? It appears to be the same overall concept, from what I can tell. Stimulates the muscles and makes them contract. Just without being hooked up to an FES bike. I'm curious if anyone has tried it?? If it might cause some skin problems, or perhaps increase spasms?

Anyone tried this, or a similar product??

Thanks