Would they be able to? Of course.
Would they be able to legally? Well..... The police can detain a law abiding citizen who has literally done nothing but OC, seize his firearm, refuse to return it on request, and people here will defend them. I don't think that it would be legal, but nobody seems to care. How much money do you have to spend fighting in court anyways?
The holster sniffers have lost that argument in the CA4.
In a perfect world, the government would respect the rights of it's citizens.