In reply to Dylan Driscoll:
Depends how many grades you have in hand. I have no doubt you could do it all on passive gear (it's a joggly horizontal, there are big nuts and threads the whole way) but you would potentially be absolutely boxed by the end of it. First pitch is all on your arms and I'd really rather be banging medium-big cams the whole way.
You also run the risk of pieces wangling out when you pull the ropes, which would make it a very serious proposition for your second indeed.
Second pitch is piss.
The HS finish is bird banned at the moment as well, so you'll need to be steady e1 to get out.