I agree, I've seen this a couple of times now where magazines were "trying" (even if not enthusiastically) to classify the Diavel as a muscle cruiser. I'm not sure exactly where it should be, but definitely not a cruiser. In my mind I keep seeing it more in the naked bike category. Ducati may have aimed this at the cruiser market, but calling it a cruiser is a stretch. I kind of view this bike as Ducati's version of the V-Rod; the bastard child that's kind of cool, but nobody quite knows what to do with.
Better living through chemistry.