The great thing about the Moras and the Opinels is that all you need to keep them sharp is a good smooth stone found along the trail, or the bottom of a coffee cup, or the edge of a car door glass. They won't be shaving sharp, but sharp enough to get whatever job you need them to do. As far as a strop, use your jean pants legs, or your shoes, leather or canvas to fine tune the edge with. No need to carry any extra sharpening gear along if you are being weight conscious. Try it out at home before leaving to see just how easy it really is. These peasants in France, Sweden, and around the world don't have a Wicked edge, or an Edge Pro, or a Japanese water stone to use to keep their knives serviceable. That is the reason they have survived all these years, and that millions are sold nationwide. Simple form, function, and utility. Can't get any simpler than that.
Blessings,
Omar