I don't think puff vaping, as you put it, is very common. I know it is possible to absorb nicotine from the inside of your mouth but nowhere near the levels you get from inhaling into the lungs. Vaping, for most people, is a nicotine replacement therapy to start with, so inhaling is the norm if you are trying to get off of smoking. If you think it would stop you using cigars (which are very bad compared to vaping) then you should do it. You never know, puff vaping might just be the next big thing