The appearance standard I think should be followed is basic self-respect. Don't come to work smelling like garbage or looking like it too. I think no matter what your individual fashion sense or personal build or whatever, you can at-least maintain it in a respectable fashion. There's a difference between someone who is irresponsible in dress and someone who is different in dress.
Genghis pretty much sums it up. A good appearance doesn't necessarily mean a good work ethic just as much as a bad appearance doesn't necessarily mean a bad work ethic. While sometimes you can get it right, it's not a guaranteed and conclusive way to judge an individual. It's as simple as that. Of course, Scuzzy seems to have
some problems as he missed that point the first five or so times I said it.