For the last few years, I've seen these holsters advertised in the discount catalogs - a strong side holster with a built-in magazine pouch. Something has always bothered me about these kinds of holsters, and my wife is tired of hearing me talk about it, so I'll give it away here.
Say I'm using my gun drawn from this holster, and I need to change magazines. But the holster is on my strong side, so I have to move the gun to my weak hand, draw the holster, then either change magazines left handed and then move the gun back to the strong hand, or move the gun and change magazines.
All that extra gun handling, under stress, seems like a great way to drop the gun.
On first glance, it looks like a great way to carry a spare magazine. But for me, that's way too much to have to learn to make this holster (or kinds like it) a good idea for me. I prefer to just carry a spare magazine in my left rear pocket.
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If anyone has experience with these kinds of holsters, good or bad, please let me know in the comments.
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There, I'm done.