Hey man, yeah you're exactly right. It all comes down to what works.If I was able to hold the gun upside down and shoot using my little finger, and that was effective, then I might do that. (I actually wouldn't do that, but you know what I mean) Whatever works.
Consistency is the key as you say.
We often video each other, right up close in slow motion in an attempt to find small things that may be able to improve speed or accuracy. In this way I've found a few little things that I've worked on; Some I changed and some I reverted. It's a good way to shave time or improve accuracy. Taking time off an IPSC stage, no matter how small is critical. In fact, taking a second or two off the time can be more beneficial to shooting a little more accurately.
I can't recall what gave me the idea for this post and I think it came out ok. It would have been good to show some personal data from the range, some of my targets with the different positions but I made them up itself...All my shots go into the bullseye no matter what...Lol. (If only!)