And at one point, the power went out completely. I plucked my Nintendo Switch out of the dock, laid back on the couch and proceeded gaming. While doing so, the thought came into my head of all the people who say that Nintendo Switch's portability has "zero" value to them, and they would never use it under any circumstances. I have an Xbox One, but in a power outage, it's as dead as my TV, lights, and everything else that requires to fed by the power lines. I've also heard people say that the crossplay between the PS4 and Vita is the same experience that the Switch provides. But to my knowledge, the PS4 would have to be running at all times, and the Vita would have to be connected to WiFi for that to work.
There are a lot of good Vita games you could play in such a situation which don't need remote play.
Other devices you can play on during a power outage: 3DS, PSP, DS, GBA, smartphone, tablet, laptop... this feature is no unique selling point for the Switch.