A gun smith that I trust says they are known to lock up if you drop them and that worries me. Also its my opinion a gun should never have a lock on it. Cant shoot something thats locked. I dont mind range guns having them, but its the guns I carry or will use in a self defense situation that I care not to have a lock. Just a personal preference. This is one of the reasons I would rather carry a Glock with out the manual safety, just squeeze the trigger and its ready.
That being said that sure is a good looking revolver.