Ciao Nicola, I would also be very interested in the photos. I've also been looking for a monitor stand that can sit directly on the floor, but I can only find them as TV support, so no adjustable arm. Thank you for answering, keep up with the good work!

I thought about doing it this way too, maybe reinforcing the hole area with another steel panel, but I'm still concerned: even if the back fixing done this way makes the monitor stable, the weight of the monitor will transfer to the glass panel through the small surface at the base of the arm, rather than to the metal panel of the desk.. That kind of weight on such a small glass surface could result in disaster!