Forgive my ignorance but what's the RSA?
Actually you were correct on the 1911,there was no thumb safety on the original design.I can't recall if JMB or the military changed that though.
For me, the Glocks although very functional do not have the visual appeal that certain Berettas or S&W's do. That being said, I have the 26 for my carry gun and I like it a lot. In my line of work I come in contact with a lot of cops. They all carry Glocks.
I take it all the cops you come in contact with carry them,because it's not true of a blanket statement.A good portion have no choice and have to carry them,and not all of them like it.Some do,but there are some that have choices and pick something else or spend their own money on something else on an approved list.Glock isn't as popular as they were any more,slowly departments are changing away from them and dealing with the financial problem.Glock is so popular because of their marketing propaganda and the fact they practically give them away to LE.
I still pretty new to all of this and I do own a Glock and a Ruger, Ive also had the priviledge to shoot nurmerous other handguns and I like them all. I dont think the people who love Glocks should talk about them like they are the king of gunz and if you dont like Glocks dont bash them to other people..Most firearms from what I see are good and will perform, sum a lil better than others, from what Ive been told it ultimately comes down to the shooter and what they prefer.