I really dislike the thesis of this article. It implies that upper management SHOULD make decisions about technical matters based upon what someone wears. This is almost a guarantee of wrong decisions. When I see someone dressed non-traditionally in that sort of environment I think there's a guy who expects to be judged on the merits of his vision, knowledge and skills. This article should have lectured non-technical managers about what to expect of their most valuable people and not the other way around.
Some DBAs wear Hawaiian shirts ironically. Its known as the Hawaiian Shirt Protocol ( <a href="http://www.regdeveloper.co.uk/2006/10/12/myth_legend_4/" rel="nofollow">http://www.regdeveloper.co.uk/2006/10/12/myth_legend_4/</a> ). Ironic or not, a Hawaiian shirt will keep you out a board room.
<a href="http://lemonodor.com/images/norvig-at-web20-s.jpg" rel="nofollow">http://lemonodor.com/images/norvig-at-web20-s.jpg</a><p>He did ok with his shirts.