I carry upwaards of 12 hours a day, for several reasons...the best of which, in my mind, is that I figure that if I carry constantly, I won't be hyperconscious of my carry and wear ten tons of tells. One problem, though, is that I already had a bad back, and it gets irksome. I'm guessing I'm not alone in this, so I came to offer my solution. I shopped 'til I found three holsters that carry in the same position, at the same angle, same thumb-break...but with different separation of the belt-slides. I take a break twice a day and change holsters and the difference in how they carry the weight has made a world of difference in the fatigue factor! I thought,if it helps me, why not share?