For those of you that do not live in a "temperate" climate where you have distinct seasons, this may be lost on you. But those of us who live where the weather gets cold usually have more concealment options once we stop wearing shorts and t-shirts and start wearing jeans, sweatshirts and jackets daily.
My "hot" weather carry on the left (Kel-Tec P-3AT) and my "cold" on the right (S&W M&P40c with a full sized 15 round mag as a spare - grip adapter attached). Anyone who has followed this blog will have seen a wide array of pistols have been gone through to come down to this final (or current?) paring.