I understand that feeling. For the past 3-4 weeks, I changed my EDC to my 640 Pro, because I have a strong preference for .357 magnum. I'm getting used to the extra weight over the 642.....but I still may well go back to the 642. That's why the 340PD continues to call to me. Even though my experiece would probably mirror Old Cop's.

I don't pocket carry my J frames. They'll fit, but I don't like it. Our minds play funny games with us. Last night I was out to dinner with a group of people, wearing a tucked in dress shirt, so I went with my BG380 in a pocket holster, with a spare mag in the off pocket. Not exactly unarmed, but sure not as mentally reassuring as that 640 Pro.