I,too, carry a swiss army classic in my 1st aid kit BUT I also carry a solid, one piece sheath-type knife made to rockwell hardness rc60. It's 6.5 inches in length and has a 3 inch blade but only weighs 3.5 oz. Now why do I carry 2 knives? I have owned many knives over the years, everything from gerber folders and Buck sheath knives to swiss army "do-anything" pocket knives. Then I read the story about the fool who got his forearm trapped between two rocks in a slot canyon and had to "saw" his arm off. Despite the fact that he violated just about every wilderness safety concept getting himself into this predicament, he did spend a good bit of time describing the use of his cheap knife to do the cutting because the same knife would not work on the rock as a prying instrument or chipping tool. Got me to thinking about what I carry a knife for. I just finally had to admit that I carry a knife for safety reasons and really no other reason. So, I set out to find one which would stand up to the situation this fool got himself into. Now I have a fairly lightweight solid full tang safety tool that will pry, chip, cut down a tree, spear something or dig into just about anything without fear of breaking. I will probably never need to use it for these purposes, but it is there attached to my shoulder harness, at the ready for any emergency and it is a small price to pay in weight for the peace of mind it brings.
Just thought I would share this perspective with you guys. Food for thought!