I've been carrying this pouch for about a year and am ready to replace it. Not because of quality, quite the contrary, the quality is fantastic. Top notch stitching, heavy duty materials, extremely durable. The problem is in the execution. The pouches are cut very high, which helps with retention, but hinders grasping magazines to draw them. I carry Glock 17 magazines, and without the three round extensions, I am unable to remove the mags quickly. This would be perfect if the pouch was cut about 1" lower.
I shoot IDPA and needed something simple but effective. I carry a G21 and this pouch is perfect for glock mags: not too bulky, great retention but still allows for quick retrieval/stowing. I've had rigid holsters before, and while this pouch may be less concealable, it more than makes up for that with accessibility and maneuverability.