it all comes down to what you practice with and get comfortable with. I moved to all dots on my carry and training pistols a few years back and have plenty of reps with them. Moving back to iron sights at this point would be slower as I would have to "find" the sights vs my dot already being close to on target on my presentation. Just the opposite of what most people experience when moving to a dot for the first time.
All personal preference, there are plenty of people who are very fast and very accurate with iron sights at any distance, and there are people who are fast and accurate at any distance with a dot.
All of that being said I agree with everyone else here that most factory installed dots are not something I would trust for anything but a range toy. The RomeoZero optic that Sig puts on the 365 series guns are not something I would trust on a carry gun, they are plastic and very flimsy.