Hello Zigzagger
Sorry for my delayed reply, i had to clarify some notional bowline concepts.
Most of your aforementioned properties, are consistent with my view about your knot structure. It appears to be a stong , stable and very secure knot, with a distinctive resistance to ring loading, a well response when subjected to cyclic/ slack shaking loading impulses, and a nice zigzag esthetic profile.
However, does this structure qualify as a bowline?
Normally this would be a positive answer, as your crossing knot shaped nipping component is TIB, loaded at both ends, plus there is a collar (with a twist), whose both legs are being constricted by the nip. If your exiting collar leg would track down the exact running end’s routing just before capturing the SP, then you would have formed the single karash bowline, but i guess that was not your primary design goal in the first place.
Nonetheless, according to another theory, this collar twist, actually takes the form of a hitch around SP, which means that the collar segment is not fully contingent on the nipping structure. Verily, if you pull the working end out of its nip and cinch your knot, it still works, therefore, it does not make the most of the nip’s full nipping action. For more information, check this reply, which is somehow related.
https://igkt.net/sm/index.php?topic=6748.msg44445#msg44445
Yet still, and provided that you have tested it, i am curious about your findings in relation to its jam resistance, as this woven collar component of your nub, does not appear to be very pliable to me.
Thanks for sharing!