I think you are both right. The Chorus chainset I have is meant to be 10 speed specific but works fine with an 11 speed chain.
I've heard rumours that the thin 11 speed chain can drop down the gap between the cahinrings.... which is why I avoided 10 speed chainsets when upgrading my Athena.
This is just internet rumour though.... so is about as trustworty as edscobles bike fitting advice.
I've heard rumours that the thin 11 speed chain can drop down the gap between the cahinrings.... which is why I avoided 10 speed chainsets when upgrading my Athena.
This is just internet rumour though.... so is about as trustworty as edscobles bike fitting advice.