My friend Linoge has a factory chromed 1896 model Mauser. The gun itself was made in the early 20th century, but the design predates the Second Boer War!
He made a modern carry holster and clip carrier for it.
As you can see, it rides close to the body and makes the pistol available for rapid deployment.
While not the ideal defensive design, C96 shows that even nearly 120 year old designs work well enough for carry. And the foes of legal self-defense would have to ban not just modern firearms but all the pre-modern designs also. Ironically, they would be using militarized police troops with modern guns to enforce the civilian disarmament — truly “War is Peace” after Orwell.