On one hand (pardon the pun) I completely disagree with the notion that a perfectl textbook grip must be employeed to adequately fire a 1911. When I bought my first Series II Kimber, I shot right handed, wrong handed, upside down, limp wristing (as much as I could after years of NOT doing it), high grip, low grip. They all fired and they all hit the target when I was shooting at a target.
Truth be told, there is no longer a textbook hold for the 1911. There was a grip for the 1911, a higher allowable grip for the 1911A1, higher grips as grip safeties 'advanced' and even higher ones now with the likes of Ed Brown's safety.
I was taught the old WWII GI, single handed hold for the 1911 and that is what I used when I started shooting up until probably 1997 or so. Then I went to a higher hold and is what I instinctively use now. I used to hit my targets with regularity and continue to do so how.
Regardless of what any ill-informed non-shooting board of trustees 'finds', the 1911 platform, with proper training, consistantly allows for faster and more accurate shooting than Glocks, SIGs, Berettas, S&Ws etc... The experience and training is key. Give a guy a gun and 100 rounds of ammo, 4 hours of training and yearly (or less) quals and the Glock probably is the best choice. I still have a serious problem with LEOs carrying pistols with no active safety.
And maybe it's because I've been around 1911s forever but I honestly feel safer around officers with a cocked & locked 1911 than officers with Glocks. If someone grabs an officers 1911, there is still likely going to be that two or three seconds of fiddling with the safeties. With most of the rest, it's grab the gun and 'bang'. Of course, not sure what that says about revolvers...