My understanding is that fixed blade must be carries open in a sheath aattatched to the belt.
Automatic knives are a definate no-no.

Folders can be carried open or concealed, but must be carried in the folded position, unless they are carried openly in a belt sheath, like a fixed blade.

I believe that the legnth restrictions no longer apply.

I am not a lawyer. This info is worth exactlly what you paid for it.

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Formerly know as Lucky Derby