Rain Jacket Question
 

My last post got a fair number of views but no responses so perhaps it was too specific. Here's a more generalized question.

Does anyone have experience with Pearl Izumi waterproof jackets with the "Optik WxB" fabric? I'd appreciate your comments regarding actual waterproofness, breathability and packability. Thank you.

I just bought one, but haven't needed to use it yet. It folds/rolls up pretty small though, FWIW. I put in in a spare bottle on my century ride yesterday. Thankfully the rain held off.