I have carried one of these for over fifty years and used it extensively where the  "proper" tool was not available while hunting, extended salt water sailing, auto and swamp buggy repairs, salt and fresh water fishing and a lot of other things down to opening packages. Most just wore out from sharpening. A few I owned had the spring segments break after years of abuse. The  citrus peeler is great for a lot of things in addition to handling fruit and the scissors will serve to cut some metal wires easily.