I want to get an Army Mount, but I'm confused. Isn't an Army Mount a stem without a tenon so you can break down the pipe while it is still hot? I see where Peterson has such a stem but some others like the Savinelli Gauis have a tenon as do other makers. Wouldn't the tenon on the Sav Gauis break off over time if the stem is always removed when the pipe is hot? I guess my question is what is a true Army Mount?