Yeah, the only downside that I can see so far is that it's going to be hard to use front movements while looking at the GG. Front downward tilt is what I use 8 times out of ten, the other is front rise, maybe front fall if I'm on a cliff looking down. Rarely use the rest (and I've got a monorail, I can do anything). So is it going to be a 2-person focussing job, one calling out to the other? Or just rear tilt and put up with a bit of skew? Actually, I didn't see, can anything move at all?