Hub Friday: Looking the Part

It's Friday!
In some workplaces, it's Casual Friday, but not here at the Hub. You'll see our sales staff in suits or some other business outfit (it's not unusual to see Bill and John, our president and CEO, respectively, walking around in 3-piece suits). We all wear name tags, all day.
Our service staff, who are a big part of making sure meetings and events go smoothly, follow a pretty steady dress code: We provide them with a black Hub button-down shirt, to be worn tucked in over a black T-shirt and black slacks, and with a black belt.
The whole look is topped off with a name tag and finished with closed-toe black shoes, flat-heeled, of course, because our staff needs to be able to maneuver, and stilettos do not allow for fast maneuvering.
Why have we chosen this look, and why do we not have Casual Fridays? For us, it's a simple answer. We have business people in and out of our facilities all the time, so we want to make sure they know they're in a place that takes their business seriously.
And when businesses use our facilities, we want to ensure that they know there are people around to help them make their events successful. So we give our service assistants uniforms that make them pop: their clothing says, we hope, "Hi! I'm here to help."
The name tags are around for the exact same reason.
What are your thoughts on Casual Fridays and dress codes?