For duty use, I consider night sights to be preferable. I use all black surround Trijicon suppressor night sights so there’s no additional color in the dot window. I have a training gun that has straight blacks on it, and I would have no major issue carrying that on duty. I just like the added insurance of night sights given that much of my shift occurs after sun down. We have guys running non-night sights on RDS pistols and it’s not a big issue. If I were forced to run an optic I didn’t trust, it’d be a bigger issue.