I neither like nor use "night sights."
I have always found them to be counter-productive.
1. If you can't see your sights, but you have practiced your shooting skills, you do not need sights for short-range (seven-yard) shooting. Just lining up the dark bulk of the pistol is good enough. It's called "slide shooting" by some people. Out beyond seven yards, you shouldn't be shooting in the dark. Escape instead, or move closer.
2. If it's so dark that you can't see your sights, can you be really, really sure that the person you're lining up on isn't your father, brother, mother, wife, daughter or son? Maybe you need a momentary-switch flashlight and practice using it, not night sights.
3. I personally find the glow of night sights distracting. I tend to focus too directly upon the glowing sight(s), so I lose track of the target at which I'm supposed to be aiming. But that's just me.
Generally speaking, there is no gadget or "miracle device" that absolves you from the need to practice, practice, practice.
You don't need night sights. You need practice to maintain and improve your shooting skills.