It only works well for people who are not overweight, and are shaped more like a tent peg instead of a pear. I happen to fall in the pear category. I have several large sized handguns, but don’t even attempt to daily carry any of them concealed.
People with wider shoulders and narrower hips tend to wear shirts that “ drape “ differently than those of us with wider hips and waistlines.
Cold weather doesn’t change things much because it’s almost always warm inside houses, places of businesses, and public buildings, and who wants to wear a lot of clothes that make you sweat in those kinds of places?