Not that I'm aware of. They dry completely when left out. As for the Penzance, I smoke English blends in briars, and Penzance is just nasty.
:clap:Cake happens!
A lot of pipe smokers over these few centuries treated their pipes in the same manner, intentionally. Many smokers look at the pipe as simply a hunk of wood adapted for smoking. I'm not suggesting this is proper or improper, it's simply one way of using a pipe. Most of us have probably seen such smokers and their pipes here and there over the years.I made the mistake of letting my first Grabow and cob cake beyond all sense, and I didn't know enough at the time to ream them, so I threw both away.