I have 3 Cinellis. My Frejus is a bike similar to the Frejus Cinelli used to race. I have decided my next bike will be a cambio corsa Cinelli.
So yes. I am pretty brand specific.
That said, I have a Bianchi city bike. I rather have that over a Cinelli city bike. I would also consider a Bianchi Folgore instead of the cc Cinelli, but it would need to be very special. Like a team-bike kind of special.