Well it certainly managed to make a dent in that piece of wood there. What would be the advantage of this tool over a regular spoon knife?
But I also tried it with a neck loop (or actually how I did it was over the left shoulder, under the right armpit) I used nylon webbing and para cord. Why this method is so useful is because you can exert the tremendous power of an axe chop with absolutely superb levels of delicate and precise control, sort of organic hydraulics....you can pivot the knife, but also you just lean back a touch, and there is real power at your disposal