I just wanted to add a note of caution. My churchwardens rarely leave home, they can be a problem to carry. The weakest point of any pipe is usually the tenon, if a pipe is going to crack this is where it will happen. Churchwardens, because of their design, are particularly vulnerable in this area. If you're going to be transporting a churchwarden anywhere, even a short distance, always remove the stem first.
If, like me, you frequently empty pipes by tapping out against your palm or an ashtray, never hold it by the stem when you tap it out. Hold it by the shank and tap gently.