Doc is right OP. The .45 ACP, running about 12,000 less psi than the 9mm Luger, is more of a "push" than a "snap" when it comes to the recoil. Plus, I bet that S&W 1911 runs about 15 ounces heavier than the Glock too...that helps tame some of that recoil. (You can also feel it if you carry it too!!!) With the right belt/holster combination though, a 1911 can be carried fine all day.I think you cannot go wrong with a Glock 17 or a 1911 or both (Eventually). The 1911 in .45ACP really is not a punishing platform to shoot. 9mm and .45 use about the same powder charge which means overall energy is about the same.
When it comes to Glock I prefer the 19 over the 17, just based on “Goldilocks” factor. It isn’t tooo big. It isn’t tooo small. It isn’t tooo light, or tooo heavy. To me it is juuust right. Balance, weight, size of the 19 just seems to hit this happy place for a utility 9mm. For dedicated range or occasional competitive use, the 17 may have a slight edge, due to to increased sight radius, but other than that I tend to grab the 19 before I grab the 17 when heading to the range and definitely if I’m going to carry a Glock For the day.