My surgeon, Professor Whocannotbenamedhere used a supra-pubic catheter during my Retzius-sparing surgery, which means the drainpipe comes out just below the navel, rather than out of the urethra.
It does involve another hole in your abdomen, but I’m sure it’s preferable to a pipe hanging out and irritating the end of your dick for ten days.
When I turned off the stop tap on the catheter bag on day nine, I was immediately able to urinate normally, and thus no need for the palaver of flow testing in urology when they carry out the TWOC (catheter removal) under normal circumstances.
Cheers, John.