A friend of mine does this, he has a whole closet full of orange and silver sweatshirts that he wears every day. Last time he got hit by a car was years ago, but when the cops showed up they took one look at him and arrested the driver before he'd uttered a word.
Here in England, everybody wears that terrible neon reflective stuff every time they leave the house. Bicycle optional in many cases. They have no shame here.
The downside is that it makes me comparatively less easy to spot.
While I appreciate that some people favor bike lanes, in my experience riding in the traffic lane as a vehicle is safer than accepting secondary status in a separate lane. And the technique is not dependent on infrastructure...and saying, "But California does it," won't help the cause in most places. [I bought the book about 20 years ago, recently returned to it now that I'm teaching my son to ride]
His book, Effective Cycling is a great way to improve bicycle safety.