Hi all,
Here are a couple of pictures I took before I returned the device for a more portable version.
I found the Logitech K780 fantastic with the device, so maybe this setup can be also interesting for somebody:
And here is how it fits in landscape mode. I also used it in portrait mode without any problem, it couldn't really fall even on my laps:
Hope this can help someone someday. Just to be clear, it's a bluetooth keyboard, so not a usb as the name of the first post suggest.
It's a very nice setup if you are look at a e-ink typing device that can connect to the web and sync every documents.