Sound advice, but I believe dirks/daggers are double edged. Which Mora's certainly aren't. I think there's also a CA law that prohibits concealed knives though over 4" (or maybe that was just folders).
CA knife law considers any fixed blade a "dirk or dagger", regardless of edges. Open carry (in a sheath) is fine, concealed carry is prohibited.
There is no limit on length for a folding knife in CA law for "concealed" (ie, in a pocket) carry, provided it is not "self-opening" (a complex subject that boils down to "is it a switchblade?").
There are length limits for schools and universities/colleges.
Courthouses, afaik, still prohibit all knives, regardless of blade length.
A few SoCal cities also have local limitations on blade length. LA, for example, has a 3" limit.
(I'm not a lawyer, this is just a very relevant subject for me.

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So, if you come to California, a fixed blade in a bag is a felony.