In the wilds you might consider the prying ability of a blade useful when splitting wood? Not classical but if things get stuck an awful lot of the wiggling and levering has similar effect to prying.

And of course you have to get to the wilds - by car, boat or aeroplane you may need to escape from or cannibalise wreckage.

I think that for genuine survival - as opposed to camping or hiking - a stong knife that will let you chop, hack and pry, and is forgiving of poor technique (as you are tired, wet, cold etc) is more useful to quickly turn the surroundings into fuel and shelter than a finer edge which is useful for skinning and other jobs.