Dammit man! Don't confuse me with the facts!
In both cases, Terry v. Ohio and Hibel v. Sixth Judicial District Court of NV, the argument becomes "reasonable suspicion of criminal activity." I would argue that merely openly carrying a firearm isn't reasonable suspicion (in this day and age I might lose). If it is legal to open carry, where is the suspicion? If OC is grounds for reasonable suspicion then can an officer indiscriminately pull someone over to check for DUI (that shows no outward signs of being intoxicated i.e. swerving, erratic speeds)?
Also, there have been increasingly more accounts of abuse of "briefly detained". I think 10 minutes or less fits the definition of briefly, but there are incidents where the "suspect" was detained for over an hour.