Guys, I've done B&W and color since I was 12, and here I am. Yes, I'm going downhill, but due to old age, not chemical "contamination". And, back then, we didn't use gloves. At least my 12 year old self didn't.
I was referring to Fuji CA II paper. This is my experience after much experimentation and has been reported by others. I challenge anyone to produce as good a reversal print on the Fuji paper as can be done on Endura paper.
On the other hand, CA II works beautifully for straight RA-4 prints.