I talked to a painter about festool stuff last year, he was complaining that he paid a lot of money for a very long AS hose, and that it didn't work as planned. I didn't go into that much, was preoccupied with the kapex I was getting the next day, just saying that it might not work (long hose). Altough I would guess sanders don't need that much suction, that was also the only intended use he had for it. (He said it was an 8m hose, but I was checking the site, and could only find 7m long hoses, and couldn't see them in the 27mm variety,maybe they're discontinued). I think it would also be pretty uncomfortable, (weightwise) holding up that much hose whith the end of the tool you're using on top of a ladder.
BTW, I was looking for a thread to link which contained a picture of Frank Pellow (at least I thought it was him) working on a ladder, with an extra folding ladder beside it with his CT on top but couldn't find it.