Not yet. I am reading your description closely to fully digest it. Give me a little time. I will hold my bindings in my own hands and work out what you mean by heel loop and heel cup. I am learning but this one seems not as easy to understand as forward lean apparently. The minute I read someone explaining what forward lean is, I guess I got the gist of it. I would love to appreciate what rotating highbacks are all about ...... but I am ...... just not there yet.
Is this heel cup thing present in all bindings? You sure I could also find it in mine?
I will get back to this topic/ thread later after some reflections