Something you should be aware of as far as the practical thing goes. The shoulder holster is tied more to your upper torso than your lower torso as your normal hip belt is. So, you must be very careful and make sure it is lashed down right up until it is time to shoot that pistol, because when your upper torso bends over to pick up your rifle, shotgun, box of shells, etc., the pistol wants to drop out of the holster and on your foot. I can attest to this first hand with a nice MDQ at a local shoot two months ago. Just something to think about.
IWS