I Pocket Carried an older S&W Model 36 pretty well every day for 20 years. Originally, I adapted it to the front Pants Pocket because I wanted something for Levis and Motorcycle riding, as well as for when doing out door chores or work things and daily Life things of all sorts.
A Bobbed Hammer is pretty well a must if intending to Pocket Carry.
And in my case, I elected to open the front of the Trigger Bow, since Riding means 'Gloves'...and, the 36 is a rather small frame, small Trigger Bow area, to begin with.
I bobbed the Hammer, shortened the originally rather longer and Square Grip, rounded it also at the rear...somewhat aggressively checkered the backstrap and Hammer top, reshaped the front Sight into a small Half-Moon, and made some new Walnut Stocks for it.
I found a nice old Sholder Holster which fit it perfectly, but if I wore it twice in all those years, just to try it, that'd be about it...even though it was comfortable and easy...access from, or being at discrete readyness, with a Shoulder Holster seemed less convenient to me than from the Pocket.
I polished and Nitre Hot Blued it at the time, but, over the years it pretty well all wore off.
Advantages...it is discrete...you can have your hand in your pocket in a casual way when sensing conditions may warrant some prepare or readyness, and no one would ever think anything about it.
5 Shots of course...and, a charged Speedloader in the other pocket is reasonable prudence.
Disadvantages? I don't know...it is what it is, you got 5 shots, and, if you can put your rounds where you mean to with some practiced alacrity, it is a pretty good Arm for it's reason and purpose and power...and hard to beat as far as the room it needs.
A few months ago I retired it and went to a 3 inch Bobbed Hammer Round Butt Model 10, which in most Trousers is about all they can handle for Pocket carry...but more often, I use an old 'Viking' IWB Leather Holster instead.
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