My wife does but she only vapes on a vape pen. I vape 12 on a couple tanks that use 1.0 and 1.2 ohm coils. I have a couple of RTA's that I build .5 ohm coils on and those I vape 6.
I was at 18-24 MG when I started but dropped that down to 6MG with my 1st MOD and down to 3MG when I have been at for almost 3 years. Actually contemplating mixing up a bottle of High Test for an experiment to see if I will actually vape less.