I have three guns I carry depending on the season, and temperatute. If it is summer and hot, I carry a Smith & Wesson J 38 .38 snubbie in a Don Hume pocket holster.
In the winter (I am in Florida, so it is mentioned with a grain of salt) I have a Ruger SR8c and a M&P Shield, 9 mm. They are much easier to carry in an inside the waistband holter.
Today it was 76 deg F and I was out with the Shield.