Never heard of showing an empty chamber, usualy just holstering is considered safe.....
It is evident from your above statement that YOU have not/ do not shoot IDPA.
The rule book, page 11 C 18. Range Commands states the following,
H. Unload and Show Clear.
I. Slide Down or Cylinder Closed.
J. Hammer Down.
Then and ONLY then is the RANGE SAFE. PERIOD
I have omitted the range commands A-G as they do not pertain to the discussion at hand
NRA Life Member, NRA Range Safety Officer, NRA Certified Pistol Instructor,, USPSA NROI Range Officer,
ICORE Range Officer, ICORE Match Director ,MAG 40 Graduate
As you are, I once was, As I am, You will be.