Oh man we have so many problems with the DS4's here in Denmark. The local Sony Center in Esbjerg replaced my first controller that started to shed rubber after only a couple of days.
After the next controller started to shed rubber of the analogs I went to replace it, but they refused. Saying they needed word from Sony first, but offered me money to go buy a controller elsewhere. So I did.
I went to gamestop and asked them specific if they replaced the controllers once they started to shed the rubber of the thumbsticks.
They replied
"We have already replaced 3 just this evening, of course you will get another DS4 once it starts to break, and it will. The Bumper buttons also stick on some of them. We have had nearly every customer come in for replacements since we started selling PS4"
That simply just confirmed the obvious for me. Those of you who speaks of us using razors on our DS4' and evening chewing on them gotta be crazy. Just feel lucky instead of the silly accusations. The controllers i have had, have like a very brittle thin layer of rubber that simply starts to peel off at the slightest use.
let's hope Sony does not need 2 years to fix this like Microsoft did with the 360, because this is a much larger issue on the DS4.