.... I've got most any base covered with these options, as I don't live in an area where it's very valuable to carry a machete.
A machete would be so much better for harvesting to fill that pipe of yours
More to the point....
I've been vacillating on the perfect set of hiking tools. Before getting into knives, I would have happily wandered off with an SAK of some sort. My best set so far is a small multi-tool, a medium fixed blade (4"-ish), and a folding saw. Another set would look like an SAK and a golok.
I think it goes with the distance, terrain, duration of trip, wildlife, etc. For a day hike, I have chosen an SAK Trekker, backed with a couple single-edged razor blades. For multi-day hikes, I would go with trio above. If I were going to more remote areas, I might want to beef things up a bit with the golok. Go third world or tropical jungle and my kit might change a lot.
You know, it just occured to me that no one has mentioned a satellite phone here-- a perfectly good way to get yourself out of hot water!
[ring, ring] Ranger Smith? Could you please send a helicopter and a cute nurse to these coordinates? ...."