I do struggle with the apparent assumption that a gunslip would stop the shot should a live round left in the gun "go off" ie getting all steamed up about whether or not the gun should be open(ed) as it's inserted/removed from a slip is missing the point.
To me, the
precise method as to how you put your gun in a slip is far less important than making sure it's not loaded before you do so.
Surely therefore, whilst slipping/unslipping (made up verb?) a gun, retaining control over the gun by ensuring the barrels are always pointed in a safe direction and of course making sure the gun is empty is all that is required?
Ohh, and in the spirit of inclusion and diversity, this is true regardless of clay or game shooting