Hi,
not a bad article,
but not quite up to date at the time of its writing ,
based on the linked video
Aug 26, 2013
OoD1pzCj5lM California Knife Laws (a former D.A. explains) - Shouse Law Group Channel
These knives -- called “dirks” or “daggers" -- may not legally be carried concealed on your person. The prohibition covers knives tucked into a waistband or other article of clothing. It also extends to knives carried in a purse, pocket, or anywhere else under your control.
From earlier that year
259908 /
PEOPLE v. PELLECER | 215 Cal.App.4th 508 (2013) | 20130417044 | Leagle.com
Thus, giving the words of the statute their ordinary and usual meaning, a dirk or dagger inside an adjacent container, such as the backpack upon which defendant was leaning, or even inside a carried container, is not "upon his or her person." The knives in defendant's backpack may have been on or about defendant's person, but the statute does not criminalize carrying a dirk or dagger on or about the person, only carrying a dirk or dagger "upon" the person.
California's has an “open-carry” law, however, for dirks and daggers. Dirks and daggers may be carried openly in a sheath -- if the sheath is worn suspended from your waist.1
This one seems silly,
as I recall another case,
guy arrested for wearing a sword or sgian-dubh openly/visibly tucked in his boot/sock, he was participating in a parade.
There may have even been a memo from the AG explaining that "suspended from your waist" is an example of what you can do and not a requirement for what you must do.
I can't seem to google it though

There is at least one guy , I'm told , spotted in california in south sf bay area, wearing a fixed blade strapped in a sheath accross his back in the past decade -- highly visible.
Also not a fan of the propaganda language used in the legislation being repeated ( dirk/dagger ) instead of using the definition of
readily usable stabbing weapon like fixed blade knife or screwdriver or pointy stick or thumbtackCause the law is never afraid to try to pull a fast one by misusing the propaganda
In re: Luke W 88 Cal. App. 4th 650