G.T.
My SIL and two of my tenants have used those, did good for about a month and then went back to smoking unfortunately. I've wrestled with the thought of getting myself one as well. I think they would be a great tool because it involves the physical act of smoking which is a huge part of the addiction.
I'm sure it's all in the mind, if you truly are done with cigarettes they CAN help you through it. Go for it and let us know how you like them. Maybe you'll convince me to put out the bucks for one myself.