I see him like this generally when he's out - which has only been once since his vet visit - so no real difference. What I'd like to see - if I get the camera set up pointing at the front of the cage again - is a better view to see if he still zooms around like he used to. Or if his low climbing is any better now he's on the Metacam and if he looks a bit less hump backed (some of that might be an illusion due to his fur loss at the back end but not sure).
ie whether there is any noticeable difference now he's on the Metacam. With that view I can only see him where he's mostly static - ie eating on a shelf, rather than on his wheel or zooming.