I believe you started writing about Naples and were forced to expand to all of Italy to come up with a second example to buttress your argument.
I'm a little surprised to see you write this, Will, as it comes across as a touch hostile. And unnecessary. In any case, my initial comments were based on my general understandings of Italian tailoring as I have gleaned these, and those understandings include the perception of Naples, or more correctly the Neapolitan cut or style, as an outstanding example of a style that incorporates drape as a consistent feature (that is, consistent with the other earmarks of this style, such as soft shoulder treatment, etc.). The fact that I can't enumerate the number of Neapolitan tailors that incorporate drape in their house style seems irrelevant to me, and the fact that other Italian tailors--such as Caraceni (actually both the Roman and Milanese branches)--also do so doesn't, to my mind at least, invalidate my earlier comments about Neapolitan tailoring. Feel free to disagree, but let's keep it civil.
Edit: Much later--home from work now. Thought it might be insightful to take a look at a well-received book on suits (and other elements of style), copyrighted in 2006, with which most of us are familiar, and happened on this sentence (p. 61): "The tailors of Naples also make a fine example of the Drape--indeed, many dandies believe that theirs is better than the original and that the Neapolitans are the greatest tailors in the world." Given the author's stature on this and other forums and his unquestionable expertise regarding this topic, aligning the drape form with Naples would seem quite reasonable.