What I'm saying is that suits and ties might be appropriate for people who work in climate controlled offices at their desks all day but they can be a hindrance to people who have to move around a lot and work with their hands.
I think even the most ardent supporters of conservative dress would agree that folks like field service techs, on site insurance adjusters, car sales people, and a bunch of similarly suited professions that must go outside (especially in the south) and still meet people look more professional in quality golf shirts with the company logo and appropriate pants and shoes. They look much better in these "uniforms" than they would buying rather inexpensive "professional" dress clothes because they don't want to spend a great deal of money on clothes they will soil and stain.