The 642 may be the most comfortable IWB firearm I have ever purchased. I've owned a lot of little guns that I thought I forgotten I had on my body,but the rounded comfortable shape of the hammerless J frame is the most comfy by far.
I slapped a pair of Clip Grips on it, and stuff it in my waistband at about 3:30. It doesn't dig in or poke or ride up. It doesn't bump into doorknobs as it is pressed in so tightly to my body that my shoulder or hip would have to brush against an object before it did.
It's a good shooter too. Yeah, lots of muzzleblast and a good bit of recoil, but it's not difficult to keep it accurate at combat ranges. I feel that if I am ever in a situation where I need to draw my j frame, the danger is probably going to be right up on me. paper plate at 10 yards rapid fire is good enough for my needs.