Some pipes are almost defining of their shapes and others seem to borrow and hybridize quite a bit, subjective indeed. My wife gifted me six Christmases ago with an extra large Johs which I took to be a brandy, but I later unearthed the little enclosure slip that Mogen had included that called it an apple, so I go with that. I like both approaches, the categorical traditional shapes and the ambiguous ones that keep us guessing. For me, the carver or manufacturer has the call, like how to pronounce peoples' names. If their call is completely arbitrary, chalk it up to humor. Iwan Ries, somewhere on their web site, has a zulu they call a Lovat, and there's nothing Lovat about it, but I think that was an overtired web site staffer.