I think Tims idea was that the cordlock would stay behind the loop under tension, but it doesnt too well.
I think, hes experimenting with some different loop materials
What he suggested to me,was just to tie it on one side, then make a small loop on the other end. Put the cordlock thru that small loop, then it can be tightened up, and still removed somewhat easily.
What is desired is something that can be adjusted tight, but quickly undone to get out, the cordlock needs to be like a button in a button hole thru a snug loop. A snap-buckle would be ideal, just heavier most likely.
I suggest a mitten hook on one end, with the cord thru the hole, and the cordlock behind it. Then remove the mitten hook from the loop for instant open.