Agreed. Regarding my appendix carry that Shawn brought up. I don't holster the gun while sitting, only standing so that pretty much eliminates my sweeps. I don't unholster the gun while I'm sitting either, and probably the only time I would is if I needed the gun. Most of the time I leave the gun in the holster and slide it in my waistband. With a good holster with retention, this keeps the gun secured and the trigger covered. I also watch the hammer for any kind of movement whether I am holstering the gun or sliding the holster+gun inside my waistband.
I'll note that as a person who also appendix carries (well, I'm left-handed, so it really isn't
appendix carry), the placement of the holster means that I do indeed point the gun at myself more than I'd like when I'm drawing and holstering, if I'm not standing straight up--and I won't necessarily get a chance to choose how I'm standing if I have to draw for self-defense. Therefore I practice from a number of different positions.
As such, I'm even more careful regarding the other rules of safety during those times. It isn't
okay that I'm breaking one of the safety rules---it is merely
necessary. As such, given the fact that you need to break at least
two of the rules to actually damage someone/something, when I am forced to break one rule, I'm even more deliberate about the others. I don't like it--but if I'm going to carry, that's how it has to be.
I'll note that I don't appendix carry for competition.
In USPSA, there is a specific rule that talks about sweeping--and makes a special case for situations during drawing and holstering:
"
10.5.5.1 Exception – A match disqualification is not applicable for
sweeping of the lower extremities (below the belt) while drawing
or re-holstering of the handgun, provided that the competitor’s
fingers are clearly outside of the trigger guard. This exception
is only for holstered handguns."
...you'll note that in this case, we see again that it isn't
okay to sweep---just sometimes unavoidable. And the rule itself specifically requires more-than-normal adherence to the other rules of gun safety, in a fashion that could potentially reinstate a DQ if the extra-careful adherence is not followed.
Sweep your arm in competition? (For USPSA, Steel Challenge, or Multigun?)
DQ.
And yeah, an amazing number of people have trained themselves to hold the holster with their off hand to ensure that they sweep themselves every time they holster. And almost all of them do NOT have John's excuse. In his case, it was the best choice out of a bunch of bad ones. For most people, though---they simply bought a crappy holster and haven't ingrained enough safety. Seriously, folks, if you plan on doing any shooting at all, spend the $30 on a kydex holster like the Blackhawk CQC (not the SERPA version), a Blade-Tech Revolution, or even an Uncle Mike's holster (not the Reflex, get the standard kydex belt/paddle version).
That's for a basic range holster. You want to work CCW, then get an upgrade from that, AFTER you've trained yourself to handle the gun (draws, holstering, loading, reloading, remedial action, and actual shooting) safely.