I get Vaper's Tongue all the time. Not all the time as in "ALL THE TIME". I'll vape a
tank full of liquid and get Vaper's Tongue halfway through until the tank empties. Screw on a new tank with a different flavour and Vaper's Tongue fades away. Then halfway through the tank i'll get it again.
It's what i expect, doesn't bother me !. In fact some of my flavours such as "Choc Fudge Brownie / Coconut" unsweetened or "Double Chocolate" bring me closer to a smoking experience once vapers tongue kicks in. (Incidentally still trying to get the CFB/Coconut balance right though. I still think i can make this flavour taste like burning "Old Holborn". I know i just need to add something more, but i just don't know what it is).
I'll describle "Vaper's Tongue" as a "very mild" numb sensation covering the top surface of my tongue.