I say concealed weapons permit and Samurai sword. I find people back of a lot quicker at the thought of being cut in half as opposed to be bludgeoned by a club.

Seriously though, I live in Gladstone and I am pretty sure that carrying a baton in Portland is illegal. (samurai sword probably won't be a good idea either) My brother-in-law is a cop so I will ask him tonight when I see him and see what he says. I would agree with everyone here. Pepper spray, different route, or ride like hell. What part of Portland are you riding in?