My Dad had his RC at the age of 80 and is now 83 and doing well. I think the doctor that did his surgery only knew how to do the ileal conduit, but due to his age, I'm glad Dad got that type of diversion. I say this because I don't know what his ability to cath would be if he developed arthritis in his hands. He changes his "appliance" (wafer and pouch) twice a week to help keep down the risk of infection. Actually, my 80-year-old Mom does the changing for him. Dad can, and has, done it for himself, but Mom insists on "helping out".
It was rough going at first as Dad had a few leaks, but soon figured out how to prevent this from happening by the use of Eakins seals to fill in any "dips" in the area around his stoma. He uses a Hollister two-piece system and wears an ostomy belt as he feels it helps keep things sealed. He empties his pouch every two hours or so or as needed before it gets more than half full. The more liquid weight, the more it pulls on the wafer.
You can't see the pouch under his clothes and he wears suspenders to keep from putting a belt across the stoma area. It is all becoming second nature to him and his "new normal."