I did very well with the radical cystectomy, having a good recovery and not too difficult hospital course, but the cystectomy has not been trouble-free. While I have no regrets about getting rid of my bladder and the years of grief it gave me, the cystectomy has left me completely incontinent. I spent a year dealing with incontinence devices until I finally had surgery to install an Artificial Urethral Sphincter. It was activated after a 6 week recovery and I enjoyed another 6 weeks of a near normal life, and then the AUS eroded through my urethra resulting in swelling and severe pain. I have surgery to remove the device this coming Tuesday and hope my pain will resolve.
Of course I can deal with being incontinent, if I must, just as I have dealt with all the other crap bladder cancer has given me. Even though I ended up with a radical cystectomy before I developed invasive disease, it was a decision I arrived at rationally after consultation with several specialists, and after several recurrences of high grade cancer in a short time. And in the process of having the cystectomy, they found CIS in the ureter which I would never have known about. All things considered, even with all the pain I endured with the urethral stricture, the BCG, and other complications, and even though I am happy to be rid of my bladder now, I do not regret keeping my bladder for 12 years after the initial diagnosis.
Since I don't have a crystal ball and cannot predict what course your husband's cancer might run, I can't tell you what your best course of action is. At the least, my story should demonstrate that with appropriate follow up you have time to decide about cystectomy, to get more than one opinion, and to find the best place for treatment.
I am a New Yorker, so can't advise regarding treatment in KS, but hopefully someone on this board can help with that.