Reactive skin & ostomy supplies: Are there always solutions?

I have to have radical cystectomy in a few weeks. I am leaning towards ileal conduit for urinary diversion. However, I have extremely reactive skin such that I am unable to wear any kind of jewelry and have to be careful about fabrics. For example, any ring--be it metal or even wood--eventually causes my skin to break out in blisters and ooze pus. In the summer I get extreme jock itch that, despite using barriers recommended by my dermatologist, sometimes requires steroids and anti-fungals to get it under control.

As a test, I wore a standard Hollister bag for three days. When I removed it, several areas of my skin had blisters. Three days later, there are still some blisters and the other affected spots are still discolored.

The doctor says that stoma nurses are excellent at finding hypoallergenic ostomy materials to accommodate "nearly every" patient. My fear, though, is the possibility that I could discover AFTER THE SURGERY that I am an outlier for whom no ostomy materials will prevent severe reactions.

Is there anyone in this group who has reactive skin like this but for whom the ostomy nurses indeed found products that don't create a reaction? And is there anyone who learned only post-surgery that no products will work? If so, how was the problem resolved?

I only get one chance to decide which urinary diversion to choose. I really don't want to mess this up. The ileal conduit otherwise makes the most sense for me--shorter surgery, faster recovery, lower complication rate, lower hospital readmittance rate, not having to self-catheterize, ability to sleep through the night, less risk of re-surgery due to narrowing stricture, and--above all--easier on myself and caregivers if I live long enough to experience cognitive decline and weak abdominal muscles. However, if there is a chance that I will be miserable every day from skin reactions to stoma supplies while I am still relatively young (66) and healthy, it won't be worth it.

Any insights from personal experience with highly reactive skin would be appreciated! I must make a final decision by March 15.