I've been hunting big beasties since '56: deer, black bear, moose, speed goats and a couple of Elk. I used to use a two bladed Case Folding Hunter, then in the early '70's I bought a Buck Folding Hunter (same pattern, but no longer made) and still use it. This last fall I bought a Rough Rider Folding Hunter to try at $15. It worked out quite well through 2 deer; I was pleasantly surprised at the quality of this Chinese made knife. Now I understand that knife snobs look down on such stuff, but there is a big difference when it comes to using a knife maybe once or twice a year, with no interest in any thing about knives except getting the job done and collecting, while appreciating fit and finish, super steels, etc.
As far as "gunk" is concerned, other than fat and blood on the blade and a little blood on the handle, I've never had much of a problem. Since I always carry a canteen, I wipe the knife off with paper towel then wash it off and wipe it down again. When I get back to the truck, I spray it down with Water Displacement Formula 40 (WD-40) and let it drain, then wipe it off again. Not much to it.
Dan