Like Waders, I was fine with irons, eyesight issues forced me to change.
I've heard/read, "Irons are faster".
Set up right (IMO), they co-witness with the irons sights. So it's no faster with irons sights (only). Just like irons, they take practice.
Heard/read "why would someone buy a small conceal carry pistol and put a great big red dot on it", apparently they have not seen the conceal carry red dots, the bulk is imagined.
YMMV, not a RDS evangelist, just don't care for the statements made in ignorance.
Jerry