Ben, thanks for pointing me towards this thread. I knew I saw this before, but trying to find it again would have been a challenge.
As for abrasion, I'm thinking of something like Hyperlite does with the material they use in their pack. Instead of cuben fiber, use this kite version with the same nylon laminate. With nylon 2nd's, it could be very rather inexpensive...aside from the adhesive, which I know nothing about. Unfortunate the result is fairly heavy, and I'm having trouble of thinking up a suitable application aside outside of packs. Ah, rain gear. Dan's cuben fiber rain pants and Joe's cuben skirt would certainly abrade quickly. This hybrid I'm thinking of might work better with a slight weight penalty.