As an aside, I've found it somewhat curious that people associate churchwardens with Tolkien's work. It's entirely the effect of the movies, I suppose.
In the books, Tolkien doesn't specify that the pipes are churchwardens. In fact, I get the impression that the characters are smoking regular sized wooden pipes, presumably briar (although briar is never specifically mentioned). I imagine that hobbits, Rangers and wizards actually smoked handcarved briars, probably in the kinds of shapes often produced by Boswell, Ardor, etc.
It's a similar phenomena, I think, to the fact that so many people associate calabash pipes with Sherlock Holmes. However, Holmes didn't smoke a calabash in the original Doyle tales. He generally smoked straight-stemmed briars and the occasional clay. The calabash was contributed by one of the original actors who portrayed Holmes (I'm not sure why, although I did read an explanation many years ago).
In any case, if you are interested in a briar churchwarden, I'd save up a few more dollars and buy either a Savenelli or a Stanwell. They are high-quality pipes and are unlikely to disappoint.