I made A in Limited 15 years ago, then bought my first open gun. Been shooting dots ever since, not counting some dabbling in SS and Prod. for Battle in the Bluegrass. I recently bought another Ltd. gun, and shot one match. Sucked badly. My eyes have aged, so seeing the front sight is a struggle. And I can't shoot splits with the 40 like I can with the dot guns. I noticed the focus is entirely different with iron sights. With my open guns, I'm concentrating on the target, the dot just goes there. Can't shoot irons that way. I even thought about selling all my iron sight guns.
For me, switching sight styles is a commitment.