id probably take the BM over the khuk....
The important thing with any knife like this and particularly if you are miles off the beaten track is to draw a halt to proceedings before it gets dark. Chopping in poor light...particularly if in an area of tree snakes or gathering wood in areas of ground spiders...or for that matter just seeing "nails" in the wood if you are in my situation...saves on problems.
+1 and id like to add beer and knife play are also quite dangerous
it looks like the BM hit through those treated 4x4s nice and deep, probably twice as deep than my unsharpened SOD.