I agree that limiting yourself to one pipe is likely unnecessary. Winnowing down possessions is a good thing; I need to do more of that. But twenty pipes don't take up much space, gives them all rest and makes them easier to keep clean, and gives a range of options. I'd prefer a Meerschaum lined, or an entirely Meerschaum pipe to one with a steel-lined chamber, since it is unclear to me which the OP is describing. A stainless steel airway in the shank is an entirely different animal and sounds fine. But I think a good rotation of pipes is the way to go, and plenty spare enough. Or fifteen, or a dozen. All good.