I use three dot night sights on any handgun I can get them on. Been using them since they first showed up, even before they were lit. Most of the current sights have a nice white ring around the vials as well and look more like the plain, unlit dots.
I actually use the dots more for shooting than I do a traditional sight picture, especially up close, from 10-15 yards and in. Beyond that, I start looking for a more traditional blade and notch type sight picture.
The biggest advantage to the three dots over the other type setups is, when aligned, they actually give you a quick, vertical and horizontal reference, and you can shoot with accuracy with them. To that point, I have a couple of guns that I use a suppressor with, that have normal three dot sights on the guns. I cant see over the suppressor, but I can shoot through it with the dots. Works the same as a red dot on your long gun with the front cover closed. I can easily make consistent "aimed" head shots on a photo silhouette at 25 yards shooting with them that way.