@sundogplanets for anyone like me who was not familiar with this feature of rose hips: It's the hairs inside the fruit that are itchy, and stay that way all the way through you, apparently.
So if you're ever in a survival situation, yes, rosehips can be eaten, if you carefully avoid the hairs! But for most uses you want to cook & strain to make tea, jelly, or a Swedish dessert soup (why hasn't IKEA spread this to the world yet?).