I have three. I carry a Victorox Swiss Army knife in my pocket at all times. When I sail I carry a Sog multi tool in a belt sheath. It has two blades, one serrated, and one smooth. It also has folding pliers, as well as various screw drivers, an awl, bottle opener etc. I've had this knife for perhaps 15 years. The blades hold an edge for a long time and it has never rusted. I also have a new captain's knife with stainless steel blade, shackle wrench and marlin spike. This knife is on the boat when I sail, but I do not carry it on my person.