Don’t expect a do it all gadget on your firearms
I saw a recent night fighting test where they basically showed how night sights become useless as soon as a flashlight gets turned on and the glowing dots won’t help you in low light conditions depending on your flashlight gun techniques. The whole flashlight thing on handguns is a debate in itself because there are so many things to consider. There are flashlight retention devices like the Section 8 Tactical ultimate retention device that have helped improve grip and freeing up your hand to open doors or do magazine changes, but it is true that it’s not as steady as a flashlight mounted on the firearm.
Night sights are nice, but who would get into a shoot out in their home without turning on a light or using a flashlight? One thing to consider are Crimson Trace Laser grips for home defense because not only can you tell depth of a target in low light you can also get better cover and still know where your gun is pointed. There are some really good defensive training DVD’s coming out an Massad Ayoob will be going over using laser grips in home situations. I highly recommend using lasers on home firearms as well as flashlights, I think those are far more practical and advantageous than using night sights.