You are right, the RO and ROC are timeless pieces. The ROC is a good complement to your 15202. I think it is pretty wonderful to come to a brand like AP through a certain model, like the ROO, and then discover the brand further through other models like the RO and the ROC. I have gone in exactly the opposite direction as you with respect to AP, from the Jumbo to the ROO. ;-)
My only trouble with the ROC would be choosing the color dial as I love all three of the current variations (the brown, the silver, the blue) -- but I cannot argue that you chose the perfect color.
The movement is a great performer, and whether it is in house or not seems inconsequential when we speak of sucha long-time, well-performing one such as this. I have the same in my VC Overseas, and I have been impressed with its accuracy.
Enjoy the ROC for many years to come.
Best,
respo