It's a cool concept, but real world applications would be very limited. A $3,000 pair of NV goggles are going to be very basic gen 3 single tube style. No depth perception and no peripheral vision which I would consider vital in CQC/home defense situation. The next step up would be dual tube style with little depth perception and still no peripheral vision. Price seems to run in range of $10,000 to $16,000. Beyond that would be the quad tube gen 4 goggles, offering depth perception and a bit of peripheral vision (97° field of view, normal field of view for humans is 200°). The price? A cool $65,000, and restricted to LE/military. And if you bump one table, drag your foot on the floor one time, or the floor creaks at the wrong time, it would give away your position anyway. That's not to mention the fact that you need a solid support to mount the goggles to even come close to properly utilizing them in a fight, which means purchasing a kevlar helmet that they can be mounted to. That will burn another $800 or a bit more. There's also the fact that you'll have to get this rig put on, strapped down and turned on, in the dark, possibly while half asleep. Someone flips on a light, you'll be blinded. A flashlight shined at you? Blind.
There are reasons they are used for highly specialized offensive operations by the military (I'm not aware of any LE agency that uses them although some may very well do so). They simply aren't viable for anything else with current technology.
I think buying an excellent weapon light and getting some good CQC weapon training would prove a far better use of of your money.