Night flying in VR (with G2 like you) used to be quite poor, but SU6 improved it significantly and it is now really good. Cockpit lighting can get a bit bright if it is totally dark outside, but that’s easily fixed with the various brightness knobs in the cockpit. The only issue I notice is that the G2 can show god rays from some light sources, but given the price point of the G2, the lenses are what they are.
In short, night flying in VR with the G2 is good enough for me.