We've had good discussions on who loaded 5 or loaded 6 in a Colt. But I don't much remember the "load one, skip one" discussion as anything but a CAS shooting table ritual to speed up the shooting. I'd never heard of load one skip one until the early '80s when Gordie Davis suggested it to me along with shooting in "costume". My Grandfather, who was taught by his father however taught us all to load 5 and turn the cylinder, fully cock and then lower on an empty chamber. Not sure my Grandfather ever wore a costume outside a Masonic Hall.
When a Colt SAA was actually used for one's protection you loaded what was required to get the job done. Be it 5 or 6. And if you were astute you fully rotated the cylinder to make sure the ammo would function in the gun. At least till the ammo was fired as the earliest 44-40 BP loads were known to jam up a Colt with primer flow. An intentional turn of the cylinder would also tell you if you missed putting a cartridge in every chamber of the cylinder.
Not everyone back in the day was a "gunman"
No one gave a chit I suspect if the cylinder got a ring from being mishandled while turning the cylinder. Making sure the gun worked likely was more important than ringing steel.
When I shoot, it is load six at half cock, then fully cock and start unloading down range. When I am at a SASS table with chamber checked match ammo and to keep the neebees from freakin while the match continues to run along smoothly, I "load 1 and skip 1". When I put on a gun to use as intended I load five, fully turn the cylinder and then fully cock to lower on an empty chamber. Yep, it takes some attention to the details to get that done.
Sure beats the chit out of having a gun jammed up after one round....when you need to fire that 2nd shot Sure, it is added insurance, likely not needed today, unless of course it is.