I am reading the Epic Life of Frank Hamer book by John Boessenecker, and it says that in the 1920s one of the adjutant generals at the time (head honcho of the Rangers) had complaints from many citizens in cities that the Rangers were too scary in their cowboy outfits including sixguns and Winchesters in town. So he made a policy that Rangers in town would not wear boots, spurs, holsters or large hats. Frank started wearing suits and narrow brimmed hats and stuck Old Lucky in his pants behind his coat.
The book is very good history of Hamer from childhood onward and seems well researched and balanced, no hype or taking reports at face value, but comparing to past actions and choices, previous reports and many interviews with other Rangers and friends and family. I'm only up to about 1926 so don't know what it says yet about the B&C investigation.