I hold it like I would any autopistol of reasonable size. Strong hand as high on the grip as possible with the muzzle lined up with the bones of the forearm. Support hand placed with the fingers wrapped around the fingers of the strong hand and the heel of the palm and the thumb on the support hand side of the grip, filling the area on the gun that is left exposed by the strong hand. Strong hand thumb pointed towards the muzzle on the side of the gun. Support hand pointed towards the muzzle below the strong hand thumb but angling slightly upwards so that the pad of the thumb rests on the left hand slide lock (disassembly lever). Trigger finger placement is very nearly identical to what you show in your post #45.
Yup thats how I am saying it should be held. Most importantly being the trigger finger placement on the bevel because that can cause the low left shooting if not done correctly. With your muzzle lined up with the bones of your forearm the backstrap is placed well in the palm with the grip angle and the grip bulge(or swell) filling the palm to allow a good purchase wether you are using a support hand or not. That will allow maximum control of one handed shooting with minimal effort or strain while also allowing a good trigger pull without jerking for maximum accuracy.
Now with the support hand in place we can achieve faster follow up shots.
The bad thing is when people pull straight back on the trigger. The ones who complain about the blade hurting their finger. Usually they might have trouble with the heavy pull for whatever reason, short fingers, weak fingers. They alleviate that by getting more leverage on the trigger. People with long fingers dont have trouble with the heavy pull, but they are using their leverage to pull incorrectly. The way I see it, if the blade is hurting you, you are not pulling correctly. A side effect of just that is low left shooting. Over leverage of the trigger pulls the palm away from the grip.
Like the following. I did not exaggerate either.
When people have to pull this way, the remedy is to use a minus (-) connector which is literally a lever for you so that proper finger placement is not sacrificed. However, for whatever reason, people think changing this is taboo. It is an offer by Glock for a reason and the reason is not to make you a more efficient killer. Its to make those with unique hands capable of safely using the Glock firearm. That's my argument, anyways.
This is proper.
And when pulled.
If you dont believe me just take 1 minute to see for yourself. If you cant pull the trigger this was, cheat it, then place the finger on it the way it would be and see where you grip will be if that were so.
Otherwise, any other grip that you can come up with might leave you with something to not like. Straining, pain, or just plain preferring other guns. Thats how I was for a long time because my fingers are short for my sized hand.
I almost got rid of my Glock, I would have been on the same boat as most saying that the trigger sucks. Now I really like it, I even increased the firing pin spring strength. There is still a pronounced wall there. Since I still have low leverage fingers it feels like a normal trigger to me as a regular connector feels to people that have no issue with it.
So I said before, the largest hands will have issues with the trigger as well because of over reach and incorrect placement on the trigger. Glock makes everything for a reason and the Gen 4 added back straps were designed to alleviate that, for correct placement of the trigger finger.