The full chain case is a great thing, even with the potential complications involved in fixing a flat. I haven't had a flat since last year when I ran over a trolley track switch that had no pavement around it (I should have seen it.) It took me an extra ten minutes to fix because of the chaincase, no big deal.
My bike is a 50+ year old Rudge that is pretty similar to the Dutch bikes, especially after getting modern 700c wheels. I don't consider it a fashion statement, but it is cool to ride a machine that works well and looks nice.
I do need more nice shirts, and a stylish jacket that has reflective elements. Even better would be a rain jacket that is stylish and reflective, is there such a thing?
Matt