I see absolutely zero reason to pull the trigger on any gun in a CCW class.
Period.
I would be suspect of an instructor who didn't mention dry fire practice.
or give a trigger control demonstration.
They could also have reason to dry fire while;
explaining different trigger pulls for double vs. single action on revolvers
Explaining different types and feels of triggers...striker vs. hammer, etc...
Teaching proper trigger techniques...
I have personally demonstrated balancing an empty .38 shell on the barrel of my sp101 and then dry firing it as fast as I could DA to show that you can use a double action revolver quickly and accurately while maintaining proper control, with the empty staying on the barrel through the shots....I showed the cylinder open and unloaded very visibly before hand though, and double checked its unloaded status.
I appreciate the mantra "always loaded"....works as a general rule for ignorant people who are not experienced with firearms,
but it is to me, a quick and dirty, factually incorrect motto to tell children and people who are ignorant of the safe handling of firearms in general.
I only treat my guns as unloaded when I know darn well they are unloaded, and being unloaded does not mean forgetting muzzle awareness or other rules of safe handling.
If they were literally always loaded, I would never put my eye to the bore with the bolt out and a bore light in the chamber. I would never clean the gun, because cleaning a loaded weapon is borderline suicidal,
Etc...Etc...
I personally have replaced the "its always loaded" mantra in my head with "if you don't know
for sure, checked yourself, with your own eyes, three times,..... its loaded."