Guys are missing out on the hot ticket for accurate shots at longer ranges by switching up the rear sight. Keep the front as minimal and uncluttered as possible. If you need a holdover use the bottom of the globe.
If you truly want to be accurate and still see through the sight, use the foolproof rear and the thinnest single post front.
I'm into bifocals and have no issues seeing if there's halfway decent light. An un hooded fiber could work with the FP if it's not too large.