@ agent_smith
Undoubtedly, it goes without saying,that you have absolute permission, to deal with this knot, in whatever way you desire, and i personally thank you for your intention to include it in your ABK's upcoming paper. I shall contact you to provide with every additional info i know. Mind you, there's not so much, as official test data conducted in human EN rated ropes, are rather scanty at the moment.
Some further contributions might be added, regarding the tying method of the midline mirrors, as well as a variation of an end termination profile, which adds even more security.
For those interested, the span loop midline structure, appears to accomodate the same tucking as EHL does, generating a bulkier profile, due to its more complex link.
@alpineer
However, any advantage that it might conceivably have over the ABK re jamming immunity comes at the price of extra complexity.
That's true, stability and jam resistance comes at the price of some bulkyness, along with some difficulty to form on stiff ropes, but nonetheless, i believe it operates on the margin of admissible and balanced complexity. I am of the view, that sometimes you got to go a bit more complex to achieve the desired functionality, but not going too far.
I'd also comment, that the flexibility of loading EHL's eye without observable jamming incidents, adds some extra versatility, in contrast with ABK's eye loading profiles that are likely more prone to jamming, as fellow climbers and testers report.
A curiousity of doubled back nipping structures is that they can cause the knot to have more than one possible dressing geometry, which may be of concern.
This particular dressing state, appears to be immensely stable, where the eye bight is firmly clamped, enjoying full constriction from both EHL's links, that can hardly deform under high strain.
Thanks for your evaluation, it's much appreciated.