Interesting, but I don't see how this could be very comfortable since there's no resistance, I could see one's arm getting quite tired by holding it in the air

Interesting, but I don't see how this could be very comfortable since there's no resistance, I could see one's arm getting quite tired by holding it in the air for long periods of time on nothing. I'd much rather something like a falcon for 3D production, or better yet, just stick with a 2D analogue like mouse/keyboard and just use imagination. It doesn't take that much to manouver in 3D space with a mouse/keyboard combo. For those about to reply with something along the lines of "but you probably don't..." I use 3D software for several hours a day, every day. I would find something like this (having to move around the object in real space) would only end up hampering my workflow, not enhancing it.