I personally like the Safariland 6004 above other kydex platforms, such as the Serpa thigh rig or the BladeTech WRS verison of the Safariland's ALS. The Serpa thigh rig is very comfortable though, as it uses a y-harness that cuts the load in half opposed to the traditional one point design. But I prefer the rotating hood design of Safariland's versus the Serpa's release mechanism, not to mention the nice felt lining to protect the gun's finish.
Moreover, you can get additional pouches to attach to the kydex or nylon (MOLLE-PALS) shroud, but honestly you won't be as fast compared to indexing your magazines from the hip, pouches on the opposite of your dominate hand side.
A forum community dedicated to Springfield Armory XD and XD-M series firearm owners and enthusiasts. Come join the discussion about optics, gunsmithing, styles, reviews, accessories, classifieds, and more!