Actually, California CCPs are by governed by the county, so experiences will differ wildly based on where you are in California. My understanding is that San Bernandino was pretty liberal with CCPs.
Not that the law matters though; I Lived in the bay area for a few years and I know my dad and a couple of my friends, regularly wandered around with concealed carry there*. I'm actually pretty surprised no one returned fire in this situation, though the shooters were wearing body armor, so I'm not sure how much it would have helped.
*All white guys, i.e. they've never worried about being unreasonably searched by the cops. I had a black friend there who was tackled at gun point by the cops, for carrying what was basically a chair leg.