The softest .45Auto I’ve ever shot was a G21.4. That said, my Springfield ROO really isn’t that far behind and fits 1,000,000 times better than that plastic 2x4. I don’t care that I can get two G21s for the price I paid for my Springfield, it’s not an L shaped 2x4 and I’d be willing to bet it carries a hell of a lot better than a G21.
I may need to go get a proper shoulder holster for a 5” 1911 now.