Wibus - I am literally sitting here waiting for your impressions :-). When I first bought our two G9s they were for running around. But the studio workflow, while a bit primitive, is actually really easy because the HDMI out supports UHD and I now can shoot high-resolution just as if I am using a view camera, except my "groundglass" is a 30 inch monitor. I now use them for almost everything. Really love the quality. And the sensor performance actually is a bit better than my Canon 5Ds.
And I have been curious from the start about the Lumix FF brethren, so please - as soon as you are comfortable - I really am looking forward to your impressions on how the S1R performs.
Thanks!! Bill. :-)