I am not aware of any PV's that take an 18xxx series battery and are a true pass thought, well other than the Provari with that weird microphone type accessory.
Most pass through features will charge the battery as you vape but will not allow power so be drawn directly from the power cord to the 510. With this type of pass though it's possible to vape faster than the battery is charging, done it
The Hana Modz (DNA20) do a have pass though feature but, like most others, the onboard charging chip-set only pushes .5A at the battery.
I have a Hana, the pass through is cool for long drives but I can still vape it dead while charging.