two rigs
I've had some experience with two setups, one for a 2-3" Charter .44/.38 and the other a GI type M3 "aviators holster" in which rides a 4-5/8" Blackhawk.
The Bulldog/Undercover holster was a Bianchi I think, and an upside down rig. . The revolver was retained in a leather clamshell, which was tensioned by an elastic band, it sounds like floppy retention, but was secure over the period of a couple years I used it. The shoulder harness was very minimal and simple, you could duck in and out of it easily. Since the Charters did not weigh much, the narrow straps were no problem. I liked it. It was a simple way to carry, no belt needed, you could use it with sweatpants, gym shorts, etc, provided one had a cover garment. I also found it a useful way to carry a second gun when wearing a primary handgun on your belt or a duty rig and wearing an Ike jacket or uniform coat. Belted into a vehicle seat, the restraints often tangle a duty rig/hip holster. I often reasoned that if rushed in a vehicle and unable to drive out of contact and a window gunfight was ensuing,that the Bianchi/charter would be the solution. I sold the rig when I sold the Charters. I've never seen another like it, it would work for the J-frame I have now.