Personally, I don't really care how anyone dresses. (Oh, up to a point. One of the jobs I had evolved to, "No tube tops, bicycle shorts, or French maid outfits". The last two involved one senior hardware support guy.)

But the other things? Oh, yeah. I've worked with (or attempted to) people like that, and I won't do it again. The first time a technical difference of opinion turns into a suicide threat, I'll just clean out my desk on my way out.