It depends on what you do while you’re carrying. Depending on how the week goes I might have to dig the dirt out of the tritium dots on an iron sight gun after a week of wear. I’d rather not have to clean that mixture of dried sweat and dirt out of the inside of an optic if I can help it. And yes my holster has a sweat guard that sits flush with the back of the slide and slightly wraps around the top of the rear sight for as much gun protection as I can get.
An office life I do not live.