Long time since posting anything because all work is NDA... Did this in few hours, testing out just basic setup of Physical Sky and how to quickly make night setup with the same settings. Aimed for quick renders, these are 4 minutes each (1080p) with dual xeon E5-2687W. (I know there are splotches still, tuning up the setup a bit more)
Nothing special, but decided to show it anyway

Night setup is converted straight from the daylight PhySky - just dropped off the physical sun, and dropped exposure of the sky to 0.2 from 1.0 - all lights are just IES spots in the scene.