Thanks for the response and I have been wondering how tough the camera is on its own as it does feel well built, it's mostly going to be in another backpack although it's amongst bike tools which potentially could damage it. I PM'd Cullinade above as he seemed to have similar usage to me and he's sent me the details on his case which I've ordered so will see how that goes.Congrats on your RX1R - great choice
The case you mentioned looks ok but personally I don't like giving any indication that I have a camera inside, which this one might do. I would recommend a generic case or satchel or courier. The RX1R is a tough little camera - I just chuck mine in a thick beanie and then into my rucksack or cross body bag. Make sure you buy a screen protector and lens hood and maybe a half case which will protect it and give you a better grip.