Upgraded to a Gen 2 today with a caveat, had an issue with the outdoor enclosure and the Gen 2 cover plate. After installing the enclosure, Rachio and connection the wires for the relay and sensors, I tried to place the cover on and noticed that the tab at the bottom tab wasn't snapping into place. It looks like the enclosure was designed with just enough space to fit the Rachio without the cover plate ... so I had to do some extra work to get it to fit.
Here are some photos.
NOTE: This is a very snug fit, so if you plan on making changes anytime in the future, it's going to be difficult to get the cover off, it was my personal preference to add the plate on.