Nessmuk was a wilderness writer from the 1930's who had a set up for the bush that is still quite popular. A double bit hatchet ,a small twin bladed trapper style knife and a small fixed blade of his own design.
Here is a photo of some Nessmuk style knives. The middle 2 are especially typical examples.


He was also a very small man ,about 5.4 and was really into light weight gear.

I would guess that the Busse version will simply be a big knife with that same shape rather than a actual Nessmuk design although Strider does have one I rather like.