If I need super discreet I carry a Seecamp LWS 380 (12 ounces) otherwise a M&P 340 with CT grips (13.3 ounces empty) in a Mika Roundcut pocket holster does the job. I have a 642-2 with CT grips and found it at 16 ounces a bit on the heavy side for pocket carry.

Next in the lineup is a Kahr PM9 (16 ounces). Those items cover all my pocket carry contingencies.
I would like a nice K Frame but it wouldn't ever be a pocket carry. If I OWB a revolver right now its a 686 3 inch or Walther P99AS in .40.