1. While it "can" vape while charging the manual recommends you do not.
2. This device is not the best choice for sub-ohming and performs great (arguably better) at higher ohms. Your best bet is to wrap a coil that can make use of the entire voltage range which would be over 1 ohm.
It looks like a stellar device and I am close to purchasing one myself. I might wait for a 2x 18650 instead, I'd rather have the extra capacity.
Oops , seemed you already covered that point already .
