I've been carrying a 649 in a Mika pocket holster for years & years without any problems or issues.
Let me restate that:
I've been carrying a 649 in a Galco nylon pocket holster for years & years without any problems or issues.
I just switched to a Mika. Excellent!
I carry a Walther CCP in a Remora pocket holster with no issues and when I go mousegun in a pocket the Beretta 950BS sits in a little Remora pocket holster.
Lots of choices. Those work.............YMMV