I don't think it moves the goal posts at all. Why? Because the studies I quoted make no distinction between a gun that sits in a case and a gun that gets carried everyday. All it does is examine the availability of guns, the relation to murder and suicide, while controlling for most other explanations.
So whether concealed carry is allowed or not really doesn't matter. More guns equals more murders, period. If the number of guns remains the same, so will the results. If more of those guns are carried in public, the only possible result is more use of them. Which is why I asked you to prove that CC decreases crime - while controlling for the other factors - or concede the point.
The fact is that a link between CC and increased OR decreased crime has not been found, but given the overwhelming evidence about the impact of availability and the increased risks associated with owning a firearm, I think it is well within reason to not allow it. At least until there is better studies.