We're discussing this on our private forum. Here's an opinion from our Deputy Unit Coordinator:
"There are two levels of shallowness at work.
The first is obvious -the suit and tie is a traditional, serious look. It probably gives the viewer the impression that you're traditional and serious.
The second is hidden behind that layer, just a little deeper. It's the relationship between the displayed image and the role of the person displaying it.
Paul Helmke and professionals like him have this down to a science. He was wearing a dark blue suit, dark blue tie, and a blue shirt. This gives him the visual image of being serious and businesslike, with no nonsense. If he wore a white shirt, he'd come off as too lawyer-like. If it was any other color shirt or tie, it might be unconsciously interpreted as being too "flashy" and not traditional enough. His physical appearance added value to his message, and perfectly matched the image of the Brady bunch - a professional lobbyist group advocating rights restrictions through legislation.
If you put Mike in the same suit, though, he'd look like a fool on TV. The image wouldn't match the role. A militia member is not a lawyer, or lobbyist, or legislator. If he tried to represent the SMVM wearing that, his message would not be taken seriously at all. The image has to match. This judgment is made by nearly every viewer, completely subconsciously.
Fortunately, I think we have a much broader spectrum for what fits the image correctly than Helmke does. The fleece jacket and T-Shirt is on the casual end of the spectrum. On the other end, I'd go with a colored shirt with an awkwardly-tied or loose tie, or a jacket and button-down shirt with no tie. Shaved or not is unimportant, as long as it looks intentional.
It's true, image is everything. Well, it's an important part of effectively conveying a message on television, anyway."