That would be sweet. As a fallback position, maybe the company could offer auxiliary cylinders in .38 Special for both blue and stainless N-frames in .357 Magnum. I could see them selling more cylinders by far than complete revolvers. Maybe they could introduce a specially marked barrel for these double-threat models: .38-44/.357 MAGNUM CTGS, then distinguish the cylinders with rear surface stamps.
Thinking out loud after midnight. Maybe this is not as good as I think it could be.