I have meaning to start this thread for a month or two, but was prompted by my experience earlier today with shooting a new Walther Q5 and a DP Pro red dot.
Some people think a red dot is necessarily slower to shot one. I don't think so.
Some people think you must use reserve iron sights to efficiently acquire the dot. I don't think so.
This is the method I use. I draw to the frame of the red dot, as opposed to drawing to the red dot. By "framing" the target, the red dot is inevitably there for me, whereas drawing to where I think the dot is, can lead to fishing. Initially, I do not even turn the dot on -- I just do presentations with the dot off, using the frame of the red dot.
Try it, and let me know what you think.