I can plainly see that my 1911s and my Glocks have different grip angles but I always forget to list that as a difference or disadvantage because once you are comfortable with both -- at least for me -- transitioning it done on an unconscious level, must like transitioning from rifle to pistol, or revolver to semi and back.
I stand at the range and alternate for no particular reasons sometimes -- just because I can -- and never think about it.
And although I don't like the stock Glock trigger, the 3.5# connector switch back and forth to a true single action pretty comfortably too.
There is one other thing none of us have mentioned (I believe): Glocks are incredibly simply to disassembly, clean and reassemble. If you even feel that such is necessary with a Glock
I was hesitant to mention this since anyone who works with a 1911 regularly gets used to the small complications and tends to forget that they exist so it would be pretty easy for a 1911 owner to honestly say, "It's no trouble to disassemble and clean." But the Glock is about one third the effort. And with an accurized 1911 just getting the bushing on and off takes a tool and can get INTERESTING.
No problem, but the Glock isn't never a challenge for cleaning. Oh, and they are all really alike for all practical purposes while 1911s are merely very similar.