This concept was understood almost 100 years by William Reichenbach. He was a WWI veteran and well-known, accomplished bullseye shooter as well. In his book, Automatic Pistol Marksmanship in 1937, he advocated for a thick Patridge post with bright color, and a wide, deep rear sight notch that can be aligned at speed. He also mentioned ruggedness as a trait. That would mean steel sights.
From his book, “That thick front-post just has to slip comfortably into an ample rear-slot, or you will never make the grade. Battle sights I call them!”