I am in CA as well, and have not run a front plate on any vehicle for 30 years now. Never got a ticket for it (yet). Definitely not putting one on my SVC bumper.
Personally I would not run a small motorcycle plate or any non standard plate, I think that is much more of an issue and likely to get you pulled over than no plate at all. They are cracking down on the recent fad of "wrapped" license plates to change the colors or make them look carbon.
On the bumper in your picture, you could easily make something to mount a plate to that angled cross member off to either side which would be legal and keep it mostly out of harms way.
This^^^
Note: I keep the front plate lying on the floor, as I have to show it every time I drive on the scale at the local transfer station (aka "the dump").
Although I've primarily lived in SoCal for most of my 40 years of adult driving life, I've lived in Washington and Texas for a few years, all three of which require front license plates, and for most of my vics, I haven't run a front plate for one reason or another.
I either throw on a novelty plate (i.e. Marine EGA), the mount wasn't there (bought vic used and didn't bother buying an OEM plate mount), and in one of my trucks, a hidden front winch installed in the place for the plate.
In all of those years, I've only been busted once, in Cali by a CHP. This was in my 1991 300ZX TT and he caught me doing a speed burst to pass some cars but I then back down to the flow of traffic. He crept up behind me, came along broadside, passed in front of me, before dropping back and hitting his lights. He zapped me for speeding, tinted windows and no front plate. Yea, I got words this kinda of nickel-and-diming. And I was in full desert cami's heading home from CPEN. The last two were minor fix-it infractions that I had a CHP friend sign off on.
In Texas, got a speeding ticket through San Antonio, but wasn't ticketed for my front novelty plate.
On my current G1, I have a ADD Venom bumper and no plate, which I've also driven through Louisiana, Texas, New Mexico, and Arizona. So far, no heartburn from LEO's.