I would not try to carry a K or L frame Smith in a pocket. It might fit in cargo pants, but it would swing around and slap your leg with each step, shouting "man with a gun" to anyone not buried in their iPhone. A 2-1/2" K frame is still nearly 7" long and 32 oz.
A 3" or shorter K or L frame is easy to carry IWB, which works even with shorts if you own a belt (preferably a belt made for carrying). Sometimes we have to adjust our personal dress code to accommodate concealed carry.
I'm perfectly comfortable carrying a small pistol, preferably .45 ACP, in a pocket holster. In fact, I have one on during waking hours, all day, every day.