Yup, if you feel the need to carry a pistol you will need it on you ans accessible. It's better to keep it in the same general location so when encountered with a stressful situation you will not be pawing all over your kit to find the pistol you have kept in 3 different locations.
I agree. So put one mount on your right hip belt of your pack and a second mount on your pant's belt (under your pack's hip belt) at the same location. Take your pack off, click the holster onto your pants, exact same location.