I'm a thin guy, only 5' 7" and always wear tucked dress shirts/pants so it's hard to carry much. I won't do tuckables and they print anyway on me so I've had to focus on pocket carry. Here's a combination I've settled on that works really well, is light weight and even works with thin dress pants. I'd always rather carry larger but for someone with my constraints, this is ideal.
Keltec P3AT 2nd Gen has proven to be 100% reliable with over 1000 rounds including FMJ and Speer Gold Dot HP's. I had a BAD experience with a 1st gen so I almost gave up on this but it's just about the perfect pocket gun. I have an S&W J frame but in dress pants on a guy my size it's bulky and the outline prints a little. The P3AT feels a lot better.
Ka-Bar TDI. Just got this and like it. It's designed for threading on the belt but I found it's perfect for pocket carry on my weak side. I've ordered an IWB sheath from FIN designs that I think will be good but it really does work GREAT as a pocket carry. There's an ideal place on the sheath to use as a "push off" place to unsheath it in the pocket during the draw.
Now to add a light and I'll be set! It's a small set up and what I call a "Nominal" EDC setup for for folks like me who wear business casual w/tucked shirts nearly 100% it's a good setup.
Just thought I'd show a pic or two for those who might be in the same boat.
Almost forgot about the holster! It's a pocket defender from K&D Holsters. It's "ok", just, okay. I had a similar holster from RJ Hedley years ago that was perfect because of it's design. The front of the holster was smooth (no boning) and the wing was contoured a bit. This helped it to print less but this holster is still good!