With Scalia's written verbiage in Heller that he and the majority believe the States still have the right to regulate open carry and concealed carry ? .
Heller is silent on the topic of open carry, properly so, because the issue was not before the court:
"Like most rights, the Second Amendment right is not unlimited. It is not a right to keep and carry any weapon whatsoever in any manner whatsoever and for whatever purpose: For example, concealed weapons prohibitions have been upheld under the Amendment or state analogues. The Court?s opinion should not be taken to cast doubt on longstanding prohibitions on the possession of firearms by felons and the mentally ill, or laws forbidding the carrying of firearms in sensitive places such as schools and government buildings, or laws imposing conditions and qualifications on the commercial sale of arms.
Miller?s holding that the sorts of weapons protected are those ?in common use at the time? finds support in the historical tradition of prohibiting the carrying of dangerous and unusual weapons."
In WA open carry is allowed, but, per RCW 9.41.250), "[e]very person who ? [f]urtively carries with intent to conceal any dagger, dirk, pistol, or other dangerous weapon ? is guilty of a gross misdemeanor ? ." My Concealed Pistol License allows me to carry my CZs concealed or openly, but I can carry my Glock 'n Gut ?

? only openly. I don't mind that too much, because pocket carrying my Glock 'n Gut is hard on my wardrobe.