Where does this "one knife" thing come from? When I flew I had two knives in addition to the "survival" knife in my vest. One was a little Schade stockman that I used for small stuff and the other was an SAK with lots of useful widgets. BTW, the Air Force survival knife can take a lot of abuse to include batoning. There's a good thread on this very topic at
Pawn shop find. As an instructor, I use mine for digging Dakota Holes, gathering boughs, endless batoning for split-wood firecrafts, using the edge for scraping tinder out of heartwood, carving, and just about anything else I would use a big blade for. BTW, when I teach, I go out for a week solid at least once per month, sometimes twice a month. My students use theirs for all the same things, but don't take care of them nearly as well, and they still last close to a year of non-stop hard wear and tear.