Google Glasses key feature: Display or camera?

Today I got to play around with a pair of glasses with a camera hidden inside it. Real neat one, for around 150,- euros. Made me wonder why I would pay 10 times that for Google's glasses. Is having a display constant in sight that much worth? Or is the ability to capture what you see with the camera, and sharing that with others, more appealing? I like the seeing-the-world-from-my-point-of-view capability of the device, thou I have my doubts on the display..

What do you think?