Ed McGivern was not the only one of the accomplished “hip shooters” who liked big, bold sights. In case it has not already been mentioned, Elmer Keith also advocated for better sights, which included adjustable rear sights. My old books, that did not get ruined during a flood in 2017, are deep in rented storage, so, I cannot readily cite anything, but I distinctly remember Elmer Keith writing about the Ruger Blackhawk and/or Super Blackhawk, describing the adjustable rear sight as being an important feature. I remember somewhat less clearly his description of his DA revolvers, but seem to recall that he preferred adjustable rear sights on all of his DA revolvers, too.
When Keith had his “Improved Number Five” sixgun built, it had sights made for seein’.
https://neveryetmelted.com/2021/07/2...no-5-revolver/
For further proof, one needs only to look at old images that show the S&W Model 29 that seems to have remained his carry gun, in his later life.