I haven't had much luck so far using this tank for MTL using stock 0.25 ohm nickel coils on the IPV D2. With airflow restricted, even at low joule settings, the coil gets to hit for low max temp settings. Once I get into higher max temp settings, I start to feel near dry hits fairly regularly. But if you don't have max temp set high, say 440F or so, then not enough power is being delivered to get much vapor - especially when chain vaping.
Temperature control may just be a sub ohm lung hit compatible thing that has no place for MTL vaping. At least with the equipment that is currently available, unless you want to build your own coils - which I never seem to have time for.
This OBS tank leaking like a sieve once the juice gets 1/3 of the way down has turned out to be a PITA. Even vaping at low'ish power (13 or so joules), the tank eats up juice pretty quick - so you get down that low frequently. If your not paying attention, all of a sudden you've got juice all over the place. I'm disappointed with this tank. Too bad, as it seemed like the tank could've been a winner. With the leaking, it really isn't a 6ml tank, it is more of a 3-4ml tank - and there are better competitors with that level of juice capacity that don't leak.