I find it interesting that people actually care about how much credibility you have based off of appearance. Who the hell cares, if my team shows up and kicks your teams ass that's all the credibility we need.
In the 90's I was on a staff that the HFC felt it very important to look professional & dress the part. I had no problem w/ this as it was his show & his call.
With that said, we coached against a rival school that wore mesh shorts & T-shirts & had something like a 30 game winning streak & whipped our a$$es.
I can tell you that we looked better on the sideline & they looked MUCH better on the field.
Once I got my 1st HC gig I decided that as long you wear something that represents the school you coach for I didn't really care about anything else. I have SO MUCH MORE TO WORRY ABOUT, then whether or not we are all wearing the same stuff or not. As long as it's representing the school I don't care.
Pants, shorts, matching, not matching, whatever. Just coach good ball. It ain't project runway.