I think they look great. Nice little detail, and sets it apart from their other products which have a much cleaner design. I think it's indicative of a new direction their taking, echoed in the kimono-style J72.
I was always under the impression that the J1A was cut a lot smaller than the J28, but the measurement on the site seem to suggest that the former (well, the GTV at least) is cut more generous than the J28, albeit by a small margin.
Is this true?