The course of fire ends with the words "range is clear."
If your gun isn't in your holster, the RO shouldn't say those words. But if he does, and the course of fire is over, and the gun is NOT in your holster, with limited exception, it's a match DQ for unsafe gun handling.
So also wrong again.
Maybe I should say this: if you think you know what you're talking about, or even if you're sure you know what you're talking about, cite the rule that supports your assertion. Because thus far, literally every claim you have made in this thread is verifiably false by simply looking at the rules, and obviously so to anyone who has taken an RO course in any of these sports.
BTW, if you were done shooting and holstered your gun safely, the only thing it'd cause is the RO to ask you to unload and show clear. There is no rule that says your gun has to be in your hand when those words are uttered. So you're absolutely wrong about that part. The shooting is over in that case, but the course of fire is not. And like every other part of the course of fire between "make ready" and "range is clear," it is absolutely legal to holster your gun in the correct ready condition. So in that case, it'd be "no call." But for this, you don't even know the reason you're wrong. You're wrong because the course of fire isn't over yet, so it is governed by the same Rule 8.2.5 discussed above.
Holstering your gun (safely) is not a crime.