What worked for you elk hunting? If something aint broke, dont fix it.
Carry a small pocket stone and diamond hone, and you should be set for anything, remember: as much time you spend using a knife, use sharpening. I have always been surpised by the knives guides I have met use. None of them are high ticket, usually relatively inexpensive knives they just plain like: Buck brand seems to be the most common. What you are wearing doesnt count in your weight, and my knife and hone are in my pocket.