I've got mine just running straight down and grouped with the carbie breathers and hanging about an inch below the swingarm pivot and to the kickstart side to avoid any "emissions" going straight onto the tyre.
I guess you're trying to avoid any discharge from getting on the chrome pipes, but if it hangs low enough, wouldn't that be avoided anyway instead of running one all the way back? Anyway, that's my thinking......
Cheers
Peter.