I've done a lot of international traveling to some rather primitive destinations--various islands of Tonga, Fiji and Belize (some almost deserted), Guatemala (Tikal), Peru (Machu Picchu; Saxahuaman) and the Yucatan (Chichen Itza; Uxmal), etc.--and my old Swiss Champ was in my backpack at every turn, along with a fistful of tie-wraps, some para-cord and a little duct tape. I can't remember how many times that little tool bailed me out of a jam. Everything from repairing a rusty old outboard motor, making a new suitcase handle, making a temporary pair of sandals out of an old tire and some rope, cleaning fish and making cooking sticks, cobbling together a belt to hold up my pants when the clasp broke or fixing a flat bicycle tire (well, removing the tire with the handle of the pliers and stuffing it with dried grass) while miles from nowhere. I love that thing, and I'll never travel without it.
Edit: Hey - check out the join date and the post count on this one. Synchronicity city!