Thanks to Ken Pollock, I was able to acquire a pair of the J&M handmades, a brown wingtip. A truly beautiful shoe. I was comparing the J&Ms to the antique chestnut cliffords I purchased recently, and they really offer an interesting contrast in style for what is essentially the same "style" shoe. The 337 last is much more elongated at the toe, which gives the shoe a sleeker look. But the J&M is really just exquisite. Much more substantial shoe, and I think the medallion puts the C&J design to shame. I also noticed the J&M has some differentiation in the style/size of the broguing along the laces as compared to the rest of the shoe. I don't want to say the differences come down to simply American vs. English, but perhaps it really is that simple. And I really can't see much of a difference in craftsmanship, but I'm certainly no expert.