I currently have an Optima sighting system on a 7 ½ inch Freedom Arms revolver. I am interested in a vertical shoulder holster. I live in Alaska. I use the weapon in the field for basic bear protection and part of my survival gear while flying for the Civil Air Patrol. Comfort and good weapon retention is more important than a super fast draw. Does anyone know of any holster manufactures with a product that will accommodate the FA with the Optima sighting system? Most hostlers are oversized to accommodate a standard pistol scope – hence too large for good retention with the Optima.