When held "properly", there is zero skin out of contact with the gun. Your support hand can/should be used to fill the void completely, creating the maximum amount of friction. The more you squeeze, the more friction, the less muzzle rise, the faster follow up shot... ymmv??? works for me and the people that taught it to me.
The added thickness of the 1911s arched mainspring housing effectively changes the angle of contact, as you mention, to a very similar feel to the glocks. This angle, or palm swell if you prefer, is what causes ones wrist to roll forward, locking bones together.
The way most people respect JMB, you'd think it would be considered sacrilege to change his design. Yet so many people screw with his, and good 'ole Gaston's engineering marvels of their own time.
When held "properly", there is zero skin out of contact with the gun. Your support hand can/should be used to fill the void completely, creating the maximum amount of friction. The more you squeeze, the more friction, the less muzzle rise, the faster follow up shot... ymmv??? works for me and the people that taught it to me.
The added thickness of the 1911s arched mainspring housing effectively changes the angle of contact, as you mention, to a very similar feel to the glocks. This angle, or palm swell if you prefer, is what causes ones wrist to roll forward, locking bones together.
The way most people respect JMB, you'd think it would be considered sacrilege to change his design. Yet so many people screw with his, and good 'ole Gaston's engineering marvels of their own time.
Ok, but "properly" according to who? And what does that mean; that one grip profile fits all human profiles so long as they hold it properly? That's a pretty all-encompassing statement. In my experience, there is no one pistol that will fit all people any more than any one shoe will. Aside from that; for all intents and purposes the actual grip angles of the Glock and the 1911 are functionally the same.
Body mechanics related: the harder you squeeze, the tighter your muscles become. The tighter they become, the slower they become. While a firm grip is advisable and in fact, necessary insofar as keeping the hand and gun welded together during recoil, excess tension in the platform is not optimal either for recoil management or speed. It doesn't work when swinging a hammer, or a bat, or a tennis racquet, or shooting a pistol.
Also, the grip angle does not in fact cause the wrist of the shooting hand to roll forward to lock-out. Not even close, unless you are horribly arthritic and your joints are pretty much immobilized. If you hold your gun with your wrist bones locked out the muzzle will be pointing down towards the floor. However, the support hand should be cammed down to wrist-lock (it won't actually be bone-lock), but this has little to do with the angle of the pistol grip.
The lowest possible axis of the pistol bore will be achieved with the beaver tail or tang wedged down into the web of the hand and the thumb pointing forward towards the target. This will permit the best mechanical advantage over the rotational forces of recoil. This hand position in many people tends to open up the area at the base of the thumb. Since recoil energy seeks the path of least resistance, it will try to flow into this gap, causing the pistol to twist in recoil. This effect can be compensated for in several ways, all of which are compromises that one has to choose from in order to achieve the most favorable overall package. However, solving grip issues by adding tension is not necessarily the best way to manage recoil.
Regarding muzzle rise: how high the gun rises is almost irrelevant (this can and has been proved with an electronic timer). What matters is how fast and consistently the gun returns and tension doesn't help that. In fact it hinders it.
Regarding things sacrilegious: JMB was indeed an absolute genius. He was way ahead of his time. So is Gaston Glock for that matter. But neither of them are/were gods. The 1911 pistol as originally adopted was actually a pretty tough gun to shoot well. Anyone who has ever gotten a case of hammer bite will tell you that the design really needed a few updates. Eventually it got them and the design evolved.
In terms of simple physics, the addition of the arched mainspring housing or the Glock palm-swell makes sense. It decreases the moment arm, theoretically reducing recoil. But in so-doing it also means a certain portion of the population won't be able to interface with it as well.
All mechanical designs are compilations of compromises and as such, I don't think there is any such thing as a perfect design of anything. As time passes we find that everything can be improved and inevitably, everything eventually is....or it is replaced with something better. That's just evolution. If this was not the case, we'd probably all still be driving Model-T's.
I personally think that rather than modifying the grip on the Glock, I would be inclined to give the Gen 4 a try and see if that gives a better fit. But whatever floats your boat.