I EDC a 642 in pocket holster in the summer (640 IWB in winter) but up to now I have had problem with jeans. It isn't just the length of pocket but also how they are cut across upper thighs.

After years of attempts to get a BERSA .380 to function well enough to trust, I traded it in on a 637. Voila! The 637 is just enough different in profile to slide into and hide within my jeans' pockets. I use the same pocket holsters but it just fits better. I still use 642 in dress pants and Dockers, but the 637 has become my "blue pants" gun.