On the shoot ability issue, I really wish Gaston had designed the Glock with a more conventional grip angle. Perhaps not an issue for someone who only shoots a Glock exclusively for their career, but a constant challenge for me shooting the Glock and other stuff.
With the Glock, I only get the muzzle fully level at the end of my extension, when I fully lock up and cam my support hand. That means I get a slight muzzle up arc on my presentation, compared to a Beretta, CZ, etc. It also means, if I am not fully locked up, my shots will impact high. Shooting one hand, where I don't get the benefit of support hand cam, I need to consciously cam my shooting hand over to level the muzzle.