My catheter was in for 10 days but I was in the hospital the whole time for other complications. I asked about
having a cystogram prior to removal since putting the thing back in was the LAST thing anyone wants to do. Was told they didn't do that. Instead, my surgeon tested for leaks during surgery prior to finishing everything up. Not sure how they do that (thinking of a pressure test like a radiator! lol) but I had little leakage within days of removing the catheter.
Sorry to hear about anyone having to wear it more than a week. The do become uncomfortable and can become a real issue if not maintained properly such as routine cleaning around the tip of the penis.