Shoulder Holsters have been around for a long time. Although they aren't as popular today they still have their place. Massad Ayoob offers this guide to four different Shoulder Holster angles and gives you the pros and cons of each. If you are looking into shoulder holsters and wonder which style is right for you, this is the perfect place to start.
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I'm not a big fan of shoulder holsters. With my skinny-ass frame, they're uncomfortable as hell and not at all concealable, yet back in the 1980s when they were a little more popular, I knew people that swore by them.