It's realistic in that the RT to an Internet service isn't where it seems to break down. It breaks down at the hub that spazzes out and goes into limp mode (which as far as I can tell is simply a flashing status indicator of different colors) and won't respond to commands. Sure, it can cause lag and sometimes there is a full second or two difference from command to action, but it's usually snappy enough that the light on z-wave control turns off barely slower than the light directly toggled by the switch. That being said, if there was a hub that required the Internet service just to perform the away from home/mobile functions but let all the scheduled timers, scenes, robots, etc. perform without Internet, I would happily jump ship. OpenHAB is a PITA and the shortcuts in iOS that you get with Wink/IFTTT and the Amazon Echo integration would all have to be hand rolled. While I've already written some of my own Alexa Apps, I don't want to go back to OpenHAB for all the rest.
