I managed to use this to quit. I tried those e-cigs; they do not work at all, and it would be expensive to replace cigs with those because they don't last very long at all (and, they are too weak to really satisfy). You have to get a proper vaporizer, the kind that produces large clouds. For a couple of months I was smoking and vaping just to see if it could get my cig consumption under control - I hadn't really thought to quit, or at least, not just yet. Then one day I went fishing and forgot to get cigs so I just had the vaporizer for a few days and it was no problem at all, no nic fit, just a kind of weird feeling because it was so different on the first day. So I just didn't buy any more cigs. It was that easy.
The one thing that I do find challenging is that mine has to be kept upright or it will leak. This can be difficult if you are in the bush or something.