I've also got a bunch of Saddleback stuff. 2 briefcases in different sizes and colors, 1 messenger bag and 1 of their large size suitcases. They're incredibly tough and rugged, but that's also their bad point. They're very heavy, even when empty. And since they're so tough, they can hold a truck load. I was once prevented from boarding a plane because my 18" briefcase was weighed at almost 40 lbs, because of all the books and stuff I had crammed into it.
The good things about them is that they are a leatherphile's(?) dream. Soft, suede-y yet tough leather, great manly colors and that leather smell. I now laugh at all the foolish mortals I see carrying around puny, over-priced Mulholland Bro's or Ghurka bags.
If anybody at Saddleback is reading this, here's an idea for a new product. How about a Gladstone bag? They've already got the construction details that are in most of your bags i.e. large, thick leather panels, leather straps with buckles and cavernous interiors. They could bridge the gap in your product line between the duffles and the suitcases. Just make sure thry're tough enough to withstand the fury of the average airport baggage handler since there's not a chance in hell you'd be allowed to take an average sized one as a carry on. And add a shoulder strap. They weigh over 10-12 lbs empty and your hands cramp just carrying them around the houseby the handles! Here are some pics of my 3 antique gladstones.
I really hope you decide to run with this idea. I know at least a dozen people who would buy one in a second, including me!