Pretty much anything that tends to bite is better in a church warden. I prefer them, and they are the bulk of the pipes I make. Aromatics tend to be sweeter. There is less chance of getting goop in your mouth. They also tend to allow a more relaxing smoking session, as you cannot dangle the pipe from your mouth, so one hand is busy, thus, you have to just relax and smoke. AND, the farther from the fire, the cooler the smoke....