But you could change from forward to reverse with your left hand on the 4610, couldn't you?The joystick is on the right hand side of the dash. It's pretty much in line with the forward/reverse lever so your hand just goes from one to the other.
Never found it an issue but then we were coming from a 4610 where the levers were mounted on the windscreen!
There was a TS100 dual power near here with the right hand side shuttle and the owner had the loader joystick fitted at the left hand side.