A suit wouldn't be the last signal checked, but the first - back which most things were done in person. It's not the signing of the deal that needs the suit, b

A suit wouldn't be the last signal checked, but the first - back which most things were done in person. It's not the signing of the deal that needs the suit, but the introduction. And once you've been introduced in a suit, changing it later is another signal that you may prefer not to send. As well as that if you've gone to the trouble of having a suit and maintaining it, you may as well wear it all the time rather than waste time figuring out if you need to wear it that day.