Stryder, the Calabash pipes normally use pressed meeerschaum bowls. This is because you smoke not in the bowl like other meerschaum pipes. In those Calabash pipes, you smoke rather inside chamber of Calabash, not in the bowl. In other words, the tobacco burns in the bowl, but the smoke comes through the chamber of wood which, in fact, makes the smoke cooler and drier because it is relatively much larger space. That being said, there is no need to put a bowl made of block meerschaum on Calabash pipes which should add more price on the tag. However, if someone wants a meerschaum bowl, we make it for an additional fee.
Hope this helps.
Sinan