If I was only going to carry one item, it would be my Leatherman Charge Ti. The tools probably would cover most needs on a camping trip plus the blade is of high enough quality for most EDC use. Plus the saw on the Leatherman would be better than using a large fixed blade for cutting wood. If you need an axe to obtain the wood, your fire is too big.

If you want to carry two items, the knife would be the RSK without the serrated blade (the charge Ti already has a serrated blade.)