I came across Ultralight Adventure Equipment's website and was wondering if anybody had experience with them: http://www.ula-equipment.com/

Their packs aren't as light as others I've seen, but they sound like they may be rugged enough for the offtrail hiking that I often do. They have one model I like that has sleeve lets you use a sleeping pad as back padding. Their larger models can hold bear canisters, which says something about thier capacities.