I carry a small J-frame revolver, a S&W 642, loaded with a single round of snake shot (staged for the first pull of the trigger) followed by JHP. The larger grip fits my hand and locks the pistol in place. This is my EDC. It’s also my backup when carrying a larger auto-loader.
Retention technique with this piece is easy, so long as you grip it tightly.
However, when I was trained on retention shooting with my duty auto-loader, I couldn’t employ it like a revolver. Reference the OP at the top for a great article by Wagner.