I just tested the new HOH connector with various mods. The only time it didn't connect was with a ProVi or Greek Modders beauty ring on provi mini and standard. Using Kayfun ring and a couple other rings, it was fine. It also connected appropriately with several other mod brands/models. Of course, I've had connection problems with those rings before with other attys, so i just might have lower pins on my ProVi's than some.
For those concerned about gaps, the worse gap was paper thin, only visible when carefully held up to light. Like always, YMMV as mod specs vary, frequently with pin depth, I do believe.