Mine has one, I can roll it up, & tuck it away when I don't need it.
When its really wet, I'll use it. Its basically a tech jacket so its made to have helmets underneath. There's pull ties around the head, & another set around the neck.
This one doesn't block my vision, or catch the wind.
I could even wear it under my helmet if I really wanted to.

Rab Latok technical shell, made out of eVent fabric.
It does a great job of blocking the wind, while being waterproof, & being more breathable than goretex.