Not to say that a knife meeting the OP's specifications would not do a perfectly satisfactory job, but really, "the knife you have with you is the knife with which you will survive".

I have been in a fair number of "borderline' situations, and frankly, I can't recall any where a knife was absolutely essential, whereas the ability to produce fire and heat, or find and render water potable, was essential.

If I had to choose between carrying a good topo map or a knife, I would take the map in most situations..