You're right about not seeing a lot of bal in CA. I've seen a couple cities and a day here and there, but mostly it's LVs, Gucci, or Chanel that I notice, with a few RMs and MJs sprinkled in.
I agree - down south from you it's complete LV land, with some Gucci and Chanel flaps here and there. I have seen RM MABs twice (once in Coronado, once in downtown San Diego), and some MJs at the mall. Only that one time at the Chanel Boutique in South Coast did I see that Bal City.
The SA at NM San Diego tells me that Bal just isn't really that popular here in the West Coast. I am suspecting that the fashionistas here are more into logo than anything else.