I actually carry a fixed blade knife when I'm out and about that is about the same length as the largest folder that I have, which is a Buck. But I really never seem to use it for much of anything. But my thoughts continue to evolve in all sorts of directions. After thinking about exactly what I really use a knife for, anywhere, I concluded that I use them to peel things and to cut carpeting. The Buck cuts the carpeting the best. Then, after acquiring a recently made (meaning it isn't as old as I am) French marmite de campement boiler, I started experimenting with field cooking, army style. That included peeling things and for that, the smaller folders worked the best and such combination knives that I have were also perfectly satisfactory. But I wouldn't say that for any of my fixed blade knives nor for a serrated-blade regular kitchen knife acquired with that in mind. So basically, I found it hard to pick a single knife for everything but I do believe that large folding knives are just as good as a fixed blade. That is, unless you think a fixed blade knife should be able to do what a hand axe can do.