Been running them on a few of my twist no problems,,,, heres a little advice, what goes bad on all Ego's when running an LR Atty is the switch, so the trick is not to over heat the unit by chain vaping it, set up 2 units and rotate if you can, or make sure you give the unit a little break after you take a vape or three, I've been using them for a long time and this works for me