:) I think that's the interesting part to this thread: for the SUL/XUL packer, what knives are working? By definition (to me, at least) the SUL/XUL afficionado has things pared down to the bare minimums in terms of weight and utility -- the least necessary for the reduced list of tasks they've designed into their gear/personal capacity.
A full-tang, 50-gram-plus knife probably isn't on too many lists, even for those with deep insight to wilderness skills, if they're carrying backpacks made of fairy wings and perforated dental floss. The prison-quality slash blade above seems to me like a pretty darn XUL blade, and I would personally expect that practicioners of the dark art aren't planning to baton wood.
I did just pick up that AG Russell, 2" ti-framed folder, also noted above. Ha ha!! Now this is an XUL knife! I can see how it could be enough knife to open packages, cut fishing line/dental floss, clean nails, carve dead flesh and maybe even gut out a few potato bugs, but the string I'd have to put on it so it won't blow away in the wind will double its weight...