I'd like to chime in on the stealth aspect.
Being in NYC, I've used this walking down the street and standing next to people waiting for trains (not in the subway) and have yet to have someone even look twice at what I'm doing. I completely understand that this does not function in a way a...
Just used mine in a bar. None of the other patrons knew and my buddy had me show it to the bartender (who he knew.) Guy was so impressed he bought us each a beer.
This is starting to pay off :)
When I started vaping, I was introduced as "take extremely long, extremely slow hits" so my usual hit is 10-15 seconds. The "active period" is perfect for about 1 hit for me. Like you just said, the beauty of it is that it's not going to release a visable OR smellable release.
Live case...
Sure -- If I want a massive, hot hit from the LB, I can plug the battery in .... wait a few seconds for it to heat up and start puffing and then start pulling very, very slowly.
The puffit tells you when to pull and only lets you pull for the 15 seconds it's actively delivering the hit...
I figured that's possible, but my issue with the LB is that a lot of my friends DO NOT listen to my directions on how much to pull so you're not exhaling (smelly) clouds of vapor. With this unit, it's regulating each hit so even on the highest setting you're not going to exhale much smelly vapor.
I've owned a VaporBros and SEVERAL mflb units before ordering the Puffit.
Like many other Puffit owners, I'm in NYC. I'm CONFIDENT you can not only use this unit on the sidewalk, but ANYWHERE. I'd bet you could use this on a subway platform and no one around you would think twice.
Great...