A piece like this wasn't 'Bubba'd' - it was purpose-built by a gunsmith for a man who had a perceived need for one.
Back in the day, men 'knew' about guns and how to handle them - they treated them as the tool that they were, and not the toy that too many do, today, so understanding the nature of the 'Slip Gun' wasn't any sort of a shock.
Elmer Keith even wrote bout one in 'Sixguns'.
Today, folks get their panties in a wad about what used to be so commonplace, all those years ago - largely because society wanted to take umbrage about every little thing.
Many old SAAs are 'challenged' largely because no one had any idea that there were better screwdrivers - they used the ones they found at home, and went at it with a vengeance, same as they did with steel wool and wire wheels.
That, and because for decades, 'gun cleaning' consisted of squirting more oil on and in to them.