I've shot a couple Glocks and just don't like the grip angle. It's only a couple degrees different from what I've seen online, but it's enough to make it completely uncomfortable to me.Never fired a Glock... but if the grip angle is noticeably different on these, won't a Glock mag be at the wrong angle to feed properly?
Just a thought.
As for the Polymer 80's with the 1911 grip angle, I haven't heard any complaints of malfunctions, but I haven't really researched it that much.