Todd and Bobby,
Both are beautiful packs... you are going to love them. Of course you already know that since you got use a demo.
McHale packs are incredibly comfortable, well built, and of course works of art :)
The cuben Dan uses are different hybrids. Not really lighter than most of the other fabrics he sells, and incredibly strong. The laminates are used to mitigate abrasion damage, plus he has figured out how to dye them too. Keep in mind that Dan has tested and experimented with cuben for several years before bringing it to market.