[Meowmeowz]

New York's legislation (like that of many other municipalities) addressing weapons of a variety of forms definitely applies to bokuto and jo. The law proscribes possessing weapons while behaving in a threatening manner or "brandishing" weapons during any encounter, and further requires transported weapons to be in some sort of hard, locked container. Note that these laws are a little vague (and in reasonable circumstances Halloween will likely afford some flexibility). However, keep in mind that it is the law enforcement guy in front of you who gets to define "brandishing", and it's well within an officer's purview to stop, detain and arrest you if you are openly carrying such a weapon. You may be able to (politely) convince them that it isn't necessary, but if you can't, you'll have to try again with a judge. On a separate note, plenty of clubs prohibit weapons separately from municipal law, and you might not see a lot of flexibility there.

YMMV,
John