A friend asked me about the dry out issue of the Centennial. Some mentioned that the duofold nib tends to be dried out easily.
I have just ONE duofold (hope to have more for sure...) and I leave my pen for just nearly three days in a pen case untouched.
This morning I try to write... and OMG... the dry out issue of the duofold nib...
... is not true to my pen! ^_^
It writes immediately and I didn't notice any darker ink when comparing to my writings days before.
Ink used: Iroshizuku - Shin-Kai
I was the one asking and that's some great news, thank you for this!
Maybe just for science you will have the chance to leave the pen for at least one week without using it, but I assume that's hard and I totally understand that!
As for the breather hole, I only read it to be "underneath the clip" and expect it to be at most 1mm wide, so that would be hard to spot, indeed, especially since I'm not sure it's present in the Prestige version anyway.
Enjoy your pen in good health! You certainly triggered me into wanting the Burgundy Chevron version!