I "grew up" in a rifle-centric shooting environment. It was a fantastic experience working in a small NFA-centric shop with co-workers who were all BTDT MIL or LEO guys. I was a deviant in 2001 when I put an Aimpoint Comp M2 on my carbine. Irons where rugged and reliable and all one needed for a "fighting carbine." So of course I stripped it all down and went "KISS." Well, we all know how that went. For me the lightbulb moment was when I attended a local carbine match with my iron-sighted "KISS" carbine and got thoroughly schooled by all but the worst shooters. I quit kicking against the goads and quickly reconfigured my setup to include an Aimpoint. An RDS equipped carbine is now considered the most basic level of sighting equipment. For a few years afterward I would practice some with irons and some with dot. At this point (and for probably the last decade) I've only shot irons on a carbine to sight in a set of backups. I think the commonality and performance gains along with the durability of current carbine RDS designs from companies such as Aimpoint are beyond dispute.
I'm wondering where we fall on that same journey now with RDS equipped handguns. My primary carry and training pistols are RDS equipped. I've taken a Gabe glass with an RDS equpped pistol. I'm in, I get it. That said, I still have a couple iron-sighted pistols as well.
Now, a proficient shooter can certainly take an iron sighted carbine and still do good work with it. But I doubt there's a situation in which that would be anyone's preference.
Are we at the same place with dots on pistols? Like, sure you could use an iron-sighted pistol, but why would you? Or is it still more evenly split? And are there reasons why irons on pistols will always make more sense and therefore keep them relevant vs irons on a rifle?