I am lucky enough that I can vape where I work. I work at a private club in the coffee bar and it is vape friendly and that includes me. I find that most of the people that come in use ego type devices and older style clearomizers that produce small vapor. My rebuildables some make me feel like I cloud the place too much. I normally take a dna40 with my Tilemahos on top of it and it produces a nice amount of vapor but almost too much for work. I need something discrete to use there. I found a Leo Cage and Killer 705 atomizer combo that I think will work pretty good for work so will see.
I think a Billet Box with a Diver V2 would be better though