A Different Opinion...
Just a few thoughts to add. Body type seems to make a huge difference here and I don't just mean it's tough for the skinny guys. I'm FAR from skinny and I find front pocket carry a bit tough. I believe it's partly because I have large thighs, particularly my quads. This creates a large and uncomfortable bulge in my pocket from the cylinder. The J frame just doesn't seem to find a comfortable resting place on my leg but rather seems to rock-around on the cylinder. I don't worry that the pocket bulge will be recognized as a gun but it's more obvious than I'm comfortable with especially when sitting.
That being said, I'm not about to stop carrying my J, I just use different means; ankle holster, side cargo pocket, etc...