Williams sells a version of that combination in a single SKU that drops right onto Remington factory rifle sights on a 700 or 870. Small screwdriver and you're GTG. I stumbled across it on clearance at an LGS and threw it on an 870, and really liked it. Solved the problems my eyes have with notch-and-post on long guns. It's basically like factory 1301 sights with fiber optic added.
Pieced it together for my Marlin, and happy so far. I like that it drops in to replace the stock stuff and leaves the top of the receiver clear and flat. Satisfies the KISS principle. It's possible I haven't done enough work with them or tried enough other stuff to know what I'm missing.