For concealable weapons in California, I recommend hanging out at a California-specific site, like calguns.net. The laws for concealed carry in California are numerous, but they're pretty clear. It may be fun to re-invent the wheel by discussing this topic with people from other states. However, you may be wasting your time because there are definite answers for every weapon that I know.

I choose not to discuss concealed carry weapons on this site. I don't need to hear comments about my choice of weapons from people who don't know California laws. Concealed carry is not a good topic for lightweight Internet chatting. If you want to carry concealed legally, then it'll serve you well if you just get it right the first time.
_________________________
If you're reading this, it's too late.