It's probably a scare tactic aimed at the county supervisors during their budget deliberations. I doubt he really means it. But it's good to at least see it in print. The Sac Bee still hasn't distributed any news of this as of this writing.
I think open carry is a better deterrent, but concealed is a good addition to that because it might give pause to criminals that just because they don't see a gun, doesn't mean there isn't one. You know, "do you feel lucky today?"