If there is urethra involvement, that can certainly have an impact on the potential for neobladder. Neobladder typically connects back up to the urethra.
The next alternative might be the Indianda pouch with a naval stoma. It just looks like your regular old belly button (from what I've been told). He would then insert a tube into that to periodically drain the pouch.
The better the cancer center, the higher the probability of getting a better diversionary system because they have more experience than anyone else and have seen more complications (e.g. urethra involvement, prostate involvement, etc).
Best of luck to your dad!
Mike
Age 54
10/31/06 dx CIS (TisG3) non-invasive (at 47)
9/19/08 TURB/TUIP dx Invasive T2G3
10/8/08 RC neobladder(at 49)
2/15/13 T4G3N3M1 distant metastases(at 53)
9/2013 finished chemo -cancer free again
1/2014 ct scan results....distant mets
2/2014 ct result...spread to liver, kidneys, and lymph...