I have a spare I will be looking at soon, it looks like it will come off easily, there are about 8 screws underneath which attach it to the vinyl covered shelf. But this would probably be impossible if it wasn't removed from the car.
I'm trying to work out how this piece has been veneered, with the kind of wobbly shape on the other side, seems impossible, but I guess I'll know when I dismantle it.
Only Right hand drive cars have this veneered grab rail, LHD ones are covered in vinyl for some reason.