My second pipe, the one I refer to lovingly as The Danish Thrift, had a stinger on it. I smoked it on and off for a while, never really knowing why I had the "wetness" trouble, or metallic taste--come to find a pipe-wise fellow that said after a matter-of-fact conversation, "...that thing have a metal filter on it?"
I don't begrudge anyone that doesn't mind them, they just aren't for me. If they aren't removable, in the case with some of the metal screw-stems, I couldn't deal with it. Luckily, most stingers are removable with some gentle convincing, that way, the smoker has the choice.
The Danish Thrift is now my go-to pipe when I try new stuff--the thing simply doesn't ghost tobacco--I can go from a sopping aromatic to my Union Square for example, and Virginias taste as pure and simple as they should from my dedicated VA pipe.