I went down to the neighborhood watering hole this past Saturday afternoon and asked the bartender if it was ok to use this..and showed him my V4L setup. He asked if it was one of the water vapor "gimmicks". I assured him it was and he said it was fine. I ended up happily vaping away while all the analog smokers had to go out on the deck in the fresh snow we had here over the weekend. To make a long story short I ended up giving all the cards I had on me away and made a few new bar friends in the process. If I were still single I think this thing would be great for meeting the girls! Just thought I would share a good experience.