Hey y'all,
I'm new here (my first post) but I've been in scouting for about 15 years. It seems like this "golden rule" is more about keeping evil sheath knives out of the boy's hands.
On the other hand, I've seen the results of improper axe handling and the same with saws... Not a pretty sight. If all that we are worried about is sheath failure, Kydex is really tough stuff.
Just my two cents worth.
Ron