Well, if it's a bit noisy to catch a vape, you can cover up the outside vents and it will draw air from the inside through those vents. Granted, it will reduce the amount you draw, but if you are sneaking in a drag somewhere, it works quite well.
I find it quite easy to change cartos. Heck a member has it down to where they can swap cartos when the tank is full!!
I really should make a video of the system I had down with my provari, an ibtanked tank and a super T velocity tip. Changing cartos was super fast and filling the tank was easy easy.
Not that it's hard with the billet box, but it does take me a lot more time.
