Yes, definitely worth it.
I've got some holiday booked around then and am toying with the idea of living like a hobo for a couple of days in order to camp out on Buttertubs and Holme Moss. Then again, the York stage does start just outside my house.
Remember, if he gets over Buttertubs then Cav would really like to claim the yellow jersey in front of his mum's house in Harrogate. That would be something good to watch.