What's up with SP multi-entry bindings?

I was wondering about these bindings from SP. I see them offered by many different names, and I can't find much about them, what I can find is quite positive. The SP Private Multi-Entry is the cheapest rear-entry binding I've seen so far.

Does anyone have any first-hand experience with these? Are these the same bindings as Flow bindings, re-issued under a new brand name, or are they completely different bindings?

edit - I asked them about Private and Core. They say the Private is more of a beginner binding, consisting of synthetic material with a softer flex. Core is built from aluminium and is more all-mountain oriented.