old topic, but i'd like to add my pennie's worth.
unless circumstances were combative, survival related, or some special cutting/chopping/prying requirement was routinely required, i don't need a cutting knife of more than a few inches, and my go to is still a li'l 2-1/4" helle ola-kniven blade. i've used one to skin deer and hog and rabbit. the laminated steel keeps a good edge, too. i buy the blades and make the handles, as well. so, my vote's for a really small, but good blade.
this one has a red oak handle and stays in a sheath that's laced to my possible bag's shoulder strap.