David C.wrote a review of Campagnolo Record 11 Chain on January 22, 2018
Familiarity: I've put it through the wringer
I have used Campagnolo Chains since 2000, both the 10 and 11 speed. I have experienced over 200,000 miles on Campy chains since 2000. They last. I don't go much over 10,000 kilometers on each chain. No, they are still within specification as far as wear. However, If you let the wear go much past .5 to .75 on the Park Tool, you will wear the chain rings and cassettes quicker, especially if you run titanium cassettes. I use Chorus cassettes for the wear factor.
I am an old school 70's vintage "steel is real" guy with 450,000 miles plus on my legs. Chains are cheap. Clean and lube them often.