On/Scene Tactical make Concealex Sheaths for several Grohmann models in house without the need to ship your knife in.

I might be sending them my Gerber Freeman to do up soon. I'll have them do one for the Grohmann at the same time if I have any worries about the sheath.

Personally I like the style of the Grohmann because I often wear my knives around my neck...hiking packs don't fit well with lots of stuff on your belt. For beating it through the bush, I wouldn't trust that style on my belt. I'd worry the lanyard would get snagged and pull out like your friends may have.

I should note that the knife stays in much better now than before waxing.