I've been in two survival situations in the back country. One heat stroke and another a torn ligament in the knee. For me and I think like most others, my first thoughts were staying hydrated, sheltered and most importantly, being found/getting out. Not eating, not building traps, not building fancy shelters, no spoons, no bowls and definitely not chopping big logs with a large knife. Survival isn't bushcraft. A nice 3.5" to 4.5" blade will excel at about any task. A small saw is great for a debris shelter. The combo of the two will let you split wood. Add a hatchet and you have a great trio. The tracker will work, I think it might make a sloppy dinning set. The sweet spot is not ideal for chopping and the saw really doesn't saw well. For about $65 you cold get an Eastwing hatchet, a Mora and a Bahco folding saw. You would be far better prepared than having the Tracker and have some extra cash. I could never recommend a poorly designed tool like the Tracker to anyone. Just my opinion.
I wonder what Cody Lundin would say about the Tracker.
Shelter is usually more important than water. You can get hyper/hypothermia with in three hours depending on the environment. At that point being able to make a shelter and/or fire becomes more important than water. You can live for three days without water.
I did bring this knife to Cody Lundin's Aboriginal Living Skill Course taken @ Yavapai College.
As for survival vs bushcraft I couldn't agree with you more. Hence the Ray Mears inspired bushcraft knife in the 3rd picture I posted earlier. I think it was Tom Brown, Jr. that said "Survival is what you do when you are naked. Camping is what you do with clothes on." I have quite a few bushcraft knives in the 3 3/4" - 4 5/8" range in D2 & S30V with blade thickness from 1/8" - 3/16" all with scandi edges. I also always carry a SAK with a saw blade.
The absolute best knife to have in a survival situation is the one in your hand.