I say 'mostly' because while I can call on each device explicitly by voice they will properly turn on/off, and using the Google Home UI I can turn them on and off. But I cannot say 'lights off' or 'turn off the lights in ROOMNAME' because TP-Link classifies them as switch devices and not light devices.
By comparison, I have a generic z-wave light switch that is passed to Google Home through Samsung SmartThings, and Samsung classifies it as a light device, which DOES allow me to use the new generic/context-sensitive commands for Google Home.
Is there a way to specify that a given light switch in my TP-Link setup is assigned to a light so I can get this kind of functionality? It's just barely short of a deal-breaker that makes me want to send all my switches back after the difference of device interpretation was figured out. The fact that I spent a couple hours wiring all these switches in is really the only thing preventing me from doing so right now.