I rode the Dragon on Memorial Weekend 2010. They had a slide that closed the Dragon to through traffic, but you could ride in from the NC side and then turn around and ride back out.
Unless they have had another slide since then I would still go unless you really need to be able to get to TN.
It was the best ride on the road I have ever had, No trucks, only a few sports cars and lots of bikes.
Guess your plans and time dictate if you want to do it or not, but we had a blast....and who wouldn't want to ride for 22 miles of twisting and turning.
There were still two TN troopers monitoring speed and handing out invitations to all those they caught.