I'd be interested in seeing the actual route (PM it to me), and my route is obviously based upon this idea, but when I heard of it I thought that it wouldn't be that satisfactory - after you drop down you presumably have to go for a fair bit before climbing back up again else you'd be going back up the same way. With my route you drop down towards the centre of the route so it doesn't suffer from this problem. In short - more ascent, less distance.