Any reports on used WPC treated bearings?

Seems like the majority of those replacing their rod bearings are getting the WPC treatment, but have any WPC bearings come back out to see how they actually look X number of miles down the road? Just curious if there is any quantitative support behind the process and whether it actually helps the S65. Searched but couldn't find anything, though I'm sure someone will provide a link 5 seconds after I post this. :D