Most my rifles have some form of optic, I haven't switched any pistols over to dots yet. I have noticed over the years less & less rifles come with iron sights... with the exception of most .22s have irons.
I put a Trijicon SRO on my Sig 226 when I added the suppressor, because the factory sights were to low & would need to be replaced. I really like that SRO on that set up. If only I could find someone to make a suitable holster with the suppressor on.