MrBadger,

Most days I wear Dickies to work also, and i highly recommend them. They look a little dressier than jean, so you can wear them in a more places than jeans. One thing I like about them is that they don't look "tactical", so it doesn't look like I'm trying going on a mission, plus they're not poly/cotton, so they wear like iron. They've lasted much longer and dry quicker than my heavy duty carhartts. As far as burn resistance, I've worn them while welding, and they don't melt holes in them like normal synthetics. Plus I've never had a problem with the coveralls when working on a hot exhaust, so I would assume they're pretty burn resistant.

For emergency clothes, I usually carry a pair of dickies pants and one of their long sleeve work shirts, or sometimes i have a pair of coveralls that I can just throw on top of whatever I'm wearing. Where I live the weather is pretty mild, so I don't have to worry about extreme cold or anything like that.