Thanks Ben. Can't imagine strapping a 14 or 18 to your arm or leg, but who knows. Strapping it to a pack makes more sense. I suppose it's better to have and not need, than to need and not have.
When I was a GI (long ago) I carried my 8" Model 1 strapped to the outside of my right thigh; it worked just fine. The lower thong wrapped around by leg but I used a cut-down GI belt & buckle (covered with olive-drab tape to eliminate the shine) through the upper belt loop and around my leg instead of the upper leather thong because it felt like a tournequet when tightened. The outer thigh position was the best place to carry the knife in the field-- it had to be out of the way but still accesible and in a place that would not get covered with mud & dirt or be in a position to accidentally stab myself by poking through the sheath.
One day when returning to our Kaserne from a field exercise in Germany, a snotty little MP accosted me for carrying an illegal (over 4" blade) knife and took me to the MP station. Of course, in addition to the Randall, I was carrying an M14 rifle, 80 rounds of ammo, a Walther PP, and two grenades. The young MP explained to the old desk sergeant that I was carrying an illegal knife; the ol' sarge looked at me and then the young MP and growled "Get outta here!"