I've been carrying a .45 for close to 40 years. I finally found one I really liked a few years ago. It's utterly reliabile thousands of rounds through it and it's never had a failure to fire, it runs like a sewing machine.
I bought it because it was so cheap [$500] and had no intention of carrying it but after a couple of 1000 rounds I was sold. It's got a tough flat black finish and it's a single stack that holds 8 rounds. It's not a target pistol, yet I can still put 8 rounds in the circle at 25ft as fast as I can pull the trigger.
It's a S&W 457, they come in SS or flat black with either da/sa or da triggers. It has to be one of the most under rated .45's made by S&W.
I carry it in a Bianchi #5 black widow with the hammer down and the safety off which makes it the same as a glock or a sig.
Take a look at one it might be what your looking for.
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