Any thread with the word "survival" in it is doomed to end in inglorious tragedy from the outset.
There's just so much cultural non-sense floating around the word. Some of it is machismo chest thumping. Some of it fear based fantasy role play. Some of it is fear of societal collapse. Nearly all of it is just a request for a "Yah man, your knife is cool" sort of response.
The number one thing about survival is to avoid situations that demand it, which explains why well prepared people routinely hike from Georgia to Maine on the AT or from Mexico to Canada on the PCT with nothing more than a Vic Classic or why millions of people survive power outages every year with nothing but the knives in their kitchen drawers.
There's also an issue of consumerism religion here that one single well-chosen purchase will somehow magically answer all needs. This is just nuts and it's based in fear and ignorance of the methods and techniques needed to deal with whatever the scenario is that we're talking about.
Define the scenario and we can talk about the right kit. Otherwise, yah man, your knife is cool.
BTW, the number one most important survival tool for a combat pilot that has been shot down is a functioning parachute. Define the scenario.