I carried both GM and Commanders on a daily basis for about 25 years, and never had any issues. A untucked, normal sized tee shirt hides them well in the summer.
I had a Glock 30S for a while. They are about the same size as a 19, and are easy shooters, and carry the same.
If you like the 1911's, they arent hard to carry year round, as long as you have a decent holster and belt. Unless your stuck with an unreasonable manner of dress, that really shouldn't be an issue, especially these days with the more relaxed dress codes.
I carried my Commander, with a double reload, in both a tuckable holster, and one of the undershirt type holsters, under an oxford type dress shirt for a while, and they both worked well too. In that kind of environment, you really dont move around much, so its a lot easier, than if you're more active.