Peter, thanks for the tek-lok photos! That's a great rig.
I had never heard of the tek-lok. I really like it that it allows you to quickly and easily remove the sheath from your belt without having to unbuckle the belt (which can be awkward in public), and also to attach the sheath elsewhere like you've done.
A mushroom ID course is a good idea. I've decided to start paying more attention to the mushrooms I see. I'd like to learn more about them. One of the experts that I've been emailing sent me this photos link.