Paul Murray, on his 65@65 run (Fellrunner Autumn 2008) described the descent form High Stile to Buttermere as 'the worst descent of the weekend". I would guess that John Fleetwood also went that way on his Lakes 2500s.
That's also the descent line on the Frog Graham Round. It's cairned (faintly) and I've done it several times, never the same way twice though! John did an ACW Tea Round and also went that way.