Anyone with a GRX and the EVF?
How is it? Do have a photo of one?
I'm presuming you mean GXR, not GRX. Here's the GXR fitted with EVF and A12 camera mount, attached to a Micro-Nikkor 200:
Yes, wow that is a serious piece of machinery
It is. It works very nicely. There are better EVFs available now, of course, as this technology is advancing very quickly.