Candidly when one becomes "of a certain age" one begins to appreciate Xs Sights. I have them on my M&P and love them. Sounds like you have a very nice pistol
I'm 52 and do need to use reading glasses. But I absolutely despise XS sights. What works better for me is a narrow front sight and a wide rear notch. On my full size 1911 competition gun, I have a 0.1" wide front post and a 0.140 wide rear notch. On my Glock 23, I have a 0.125" wide front post and a 0.155" wide rear notch.
I find that this setup allows me to focus on the front sight and, unlike the XS sights, still allows me get decent accuracy.