Re: A competent person is a competent person and it has nothing to do with gender
Quite true.
Unfortunately, many, many people operate on impressions and preconcieved notions. I do as well, up to a point.
Let me give you a personal example :
One day, I had to change my running shoes. I thus took my noon lunch break to do so, and found my way into a sports shop. I was mosing around the aisles without a clue, and a clerk noticed me and intercepted me. He was young, had a mohawk, a wifebeater shirt, army leggings and some sort of black boots, with the complementary assortment of metal sticking out here and there in the most improbably places. Not the kind of individual I generally entertain a conversation with.
I expected to be conned into buying some expensive pair after a round of marketing platitudes. Boy was I ever wrong. He asked me pertinent questions about the type of activity I was planning, the type of terrain I was going to be on, the frequency of my activities and my weight. He asked me to walk in front of him, explaining that the way I walked would condition what type of soles the shoes needed. When we were through, he pointed me to two different models, explaining to me why he believed that those were the best choices possible in my situation.
In short, he was competent, polite and professional, a very far cry from what I was expecting. I left with a good pair of shoes (for a price, true) and a humbling recall that the clothes do not make the man. Before leaving, I made a point to thank him for his help.
So I try very hard to not judge people by their outward appearance - up to a limit (if you stink, are unwashed and unpleasant, I don't care if you're the best in your field - you can go on living in your mom's basement).
On the other hand, as a self-employed consultant to banks and other financial institutions, I wear a suit. If you come to me for an interview, I will expect you to know the field and dress appropriately. If you don't, I'm sorry but you will not be working in my market with me.