I'm a Parisian cyclist and I read that a lot's of people are using french bikes so I'll be happy to answer to your question if I can , I'm collecting bike from all style and ride mostly in the city let me show you some of them
my last porteur with fixed gear only build with used parts
the gommelack is now over the bar
the vintage style a Terrot 54" in excellent condition wear 55mm tire
my MB0 aka Zipp
and a Herse I had in 90"
first bike 1971