For me there is an economic consideration. Most of the domestic airlines I've flown charge a fee for checked baggages. Roundtrip comes up to be $50 extra on top of your airfare. So for me, unless I happen to have hankering for thrift shop archeology or improvisation, the $11 Mora from Amazon Prime looks like a simple, cheap solution.

At the end of the trip you can donate it to the thrift shop. As you leave more and more of these knives around the world, you are basically giving future archeological graduate students dissertation topics: "Population Movement or Trans-National Trade Pattern? A Statistical Study of the Distribution of Swedish Survival Knives in North America 2015-2040."