I’d like to get back to talking the knot in the original post and how it behaves in rope. It’s intriguing.
I’ve tried it in various situations (e.g., paracord, boot lace, larger polyester, large diameter objects, small diameter objects). It has not slipped.
On the flip side, the knot does feel like it might jam in certain circumstances and materials. However, that’s just a guess because I have not jammed it.
I’m guessing the knot might slip if the object has a large diameter (ring loaded knot) and is slippery. Again, that’s just a guess because I have not gotten the knot to slip. If the business portion keeps behaving like a Marlinspike Hitch and doesn’t capsize, then it shouldn’t slip.