Thank you DDK, and welcome to this forum.
xarax, thanks very much for your welcome!
... That is, a knot that is, essentially, identical to Zeppelin bend, but lacks the full symmetries of the Zeppelin bend, is not as good a bend as the Zeppilin, just because of this.
I looked at this bend as being much more similar to the Smith/Hunter's Bend than the Zepplin Bend. It varies from a Smith/Hunter's Bend only in the non-interlocking of loops while maintaining the same symmetry. I can see how one could view the bend in question as a variant of a Zepplin Bend. I would agree that from this perspective, the change in symmetry has dramatic consequences.
Might it be true that any change in interlocking overhand bends will not be subtle?
DDK