Op very interesting post!--
Way back in the 70s I had a Bianchi shoulder holster for my full size 1911. 45. Decided to get rid of it and advertised for sale at my gun club. Now do not remember all the details but priced it to sell. From what I heard it got bought and sold a few times, and just by a coincidence years later found out some of its history after I sold it
Somehow it ended up with a rookie in the city police force and he carried a K frame Smith 4'' (off duty time) in it for years.
That PD required its officers to be armed at all times in the city area and he did not want to spend the money to get a smaller carry gun so his issued sidearm was all he had!