That's pretty cool. Was the guy just unsure bout the knife or wanted to do the spear?
There is a lot of history in Germany regarding hunting boar with spears in the old days and he really wanted to have a go with a spear. He is a good friend and is the one who picked out the spear that I carry from time to time. They can be handy expecially if you want to stick one from a distance while on thin ice...

We will be hunting the canyon edge tomorrow and he will get some work with the knife, you don't want to be climbing down the rock face with a spear.