There have been discussions on this topic on some of the other forums recently with some good posts from survivors of incidents/accidents that would not fly in anything less than full nomex & Bonedome now.
But at the same time the spamcans are car-like and you also have to bear in mind your passengers view if they are in normal clothes and you are in a bonedome!
I thought there might be a niche in the market for aviation clothing that looked OK for normal attire, but would afford the protection and utility we require. As I said previously the Fat-Face trousers are almost there, as are some others, but the normal clothing provided by the aviation stores would not look right on a PPL under 50