I am fairly new to pipe smoking and have noticed references to "flake pipes" or pipes that are particularly good for smoking flake tobacco. I have gotten the idea that these pipes have chambers that are narrow and pretty deep. Is that what a "flake pipe" is; narrow and deep? I am guessing that if you rub out the flake, it then wouldn't make much difference what shape the chamber is. Please chime in and enlighten me about "flake pipes." Thanks!