So what is your threshold for a weapon for actual daily carry?
Threshold high or threshold low?
For the most part my absolute minimal gun is a 5 shot J frame .357 loaded with Federal 125s. I can't think of the last time I packed anything smaller without also packing something larger.
My normal carry gun is a 4-5/8" single action .44 magnum or a 4" barreled DA .44 magnum.
If I ever move back into a larger town I'll probably go with a Commander-sized 1911. I've also given the Glock 29 SF some thought but double stack mags mostly don't fit my hand. Best semi-auto for my hands is a Kimber Pro Carry. Of the high cap guns, a Browning Hi Power isn't horrible.
Summer here will throw a few 105 degree or hotter days. Concealing ANYTHING, other than with a fanny pack holster, is pretty much impossible. Glock 43 might have a place in a pants pocket.