I had zero problems setting the thing up after work yesterday. Cut house power, opened up the panel, popped in new 220 breakers, and followed the instructions. I opted for the solar module too. Took just a few minutes and it's dead easy (no sense paying an electrician to stick in a breaker for heaven's sakes). Turned power back on, then downloaded the app and connected the device via wifi no problem.
The only disappointment was that it hasn't yet detected any devices. But it was somewhat informative to go around the house and try turning different things on and off. It responds immediately when the A/C fires up or the sump pump runs for a second you know instantly!
As far as solar, the Sense system was in agreement with my inverter readout to within one or two Watts! That's pretty amazing. I guess we'll see what it can detect. It says to wait a week or two and I will. A little underwhelmed so far.
I'd have trouble recommending a $350 device to anyone else though, unless it gets a whole lot smarter over time. I guess we'll find out.
Bottom Line: No, I would not recommend this to a friend