Does it matter if one person notices a CDer out in public, or 100 people notice?
NO. Not in the least.
What matters is whether anyone is going to try to do you physical harm simply because of the way one is dressed.
Walk around a busy mall in the daytime and it's highly UNlikely one will be attacked or noticed. Or followed to your car and attacked. Going out at night and/or where alcohol is being served [not to mention wearing "clubwear" of some type] and of course "risk" goes up.
CDers need to use "good judgement" just like everyone else.
People incur "risk" every time they drive their cars.
