I couldn't help myself. The sky cleared, so I set up the FSQ106 on the G11 and stuck the Nikon D810A on the back.
This is a single 60s sub, with all noise reduction turned off at ISO3200. No calibrations. 'Processing' was loading it into the new nikon capture NX-D software, setting the black point and exporting it.
I've stuck a higher res version on astrobin
here
I took about 15 minutes worth of subs, as well as some flats, darks and bias, and I'm running a quick and dirty processing job in pixinsight right now.
First impressions are that the noise in this camera is significantly lower than the D800, and obviously the H-alpha response is much better.