oregon is an open carry state, you may openly carry a LOADED firearm . state law EXEMPTS ccp holders from ANY municipal law that restricts your carry. your firearm in any condition of readiness is exempt!
by the way, i have said it before, the open carry of an unloaded firearm is useless, you may as well open carry a roofing hammer, it is a much better bludgeon.
if you need to draw your weapon, will you have time to load it BEFORE you become a victim?