I have one in the pipeline for the Shield coming up. For now, here are a couple of pics of the XDS.
Swenson, the reason I would add the half inch to mine is for the extra leverage on the yaw pad. My personal holster is pretty short, so the yaw pad does not do much for you. You can not see it in the picture, but I slipped it behind the belt loop to give it more pitch inward and back. Pretty much the main reason.