I've had one of these for a few months now, and it's definitely a solid pen. And their CS is great (had dealings with Chelsea as well, she's top notch).
My only concern about it is that, a few days ago, I went to clean the mouthpiece part of the atomizer, and noticed there is a lot of 'goo' stuck to the inside of it. I use shatter I buy at dispensaries in Breck, so it's professional-grade. If that shit is going into your lungs, I would have to say that's a hell of a lot worse for you than smoke.
Note that I'm not talking about the chamber, but the mouthpiece itself. I wouldn't expect there to be residual stuff, let alone as much as there is, stuck to the inside of that. If it's getting that far down, I can imagine it's going into your lungs as well.
Just my two cents.