Airnimals are good bikes, and seem to behave more like 'full-size' bikes than most folders. If you can cope with 20" wheels, then the Rhino's ?24" shouldn't be an issue. Where they fall down is that the fold is rather awkward, and involves removing a wheel. If it's an occasional fold, then that might be OK.
The Rhino is an odd beast, though. I can see the Chameleon is a decent enough road bike, and the Joey serves well as a commuter. but the Rhino is really an off-roader. I couldn't see myself riding offroad with small wheels.