From everyone's comments, it sounds like a light fixed blade and a sub 2oz keychain type multitool would be the perfect combination. Perhaps the 1.58oz Style PS; it comes with pliers, everything you'd need for nail care, and basic gear field repair (except duct tape) without the redundant blade. And, it's small enough to clip to your pack and forget it. That combo. would still be lighter than the tool I carry now.