I have no experience with it but I'll throw out my thoughts....
The windage adjustment makes that sight look clunky. The '76 is not a target rifle, although it can be pressed into service for informal target shooting. The combination of windage adjustment on a Beech seems like they are trying to make a hunting/informal target sight into a multi-purpose, do anythng, Swiss Army knife type sight.
I like a Beech sight, but I would stay with the traditional version, BACO has that one too.