Hmm... I had a green perfo e/w and after using it for half an hour, I noticed that the leather on an area of the chain strap was sticking straight up!
I was extremely annoyed... I actually ended up exchanging it for a soft caviar white medium flap with the MM lock and chains, which was ultimately a better bag for me anyway.
My black caviar Jumbo flao had a similar issue where I noticed a bit of leather on the chain strap sticking up (you really have to examine the straps for any of those unglued portions, and I'm extremely picky), so back it went for another, perfect black Jumbo.
My Khaki Baby Cabas from last year has an area on the back of the Medallion where the rose gold color has basically faded to silver... I think this has happened to other pfers too, and I'm definitely annoyed by it, but fortunately it's on the back part of the Medallion and not really seen, so I can deal with it.
I guess considering the number of bags I have, the few issues I've had aren't so bad
... and at least the first two I mentioned were resolved.