An update!
I was lucky enough to be one of the original testers.....I put around 6000 Kms on mine, in all weathers, and on various bikes....29er full suss, through to my Hetchins.
I love it.....or should that be 'loved', in the past tense!
Mine developed a lot of sag around the rearmost two rivets.....so I ended up sitting on the rails. Not comfy! I contacted Brooks though and spoke to a real human, first time (do you remember that? Before recorded messages!). I got put through to steve, in the workshop, who said they don't sell new tops......but he would send me out a new one FOC! :0)
He also sent me some new rivets, to tidy it all up.....and I even got to chose the colour! Top service, from England's finest saddle makers :0)
The new top is not as comfy as the old one at the minute.....I have to get the angle right again. I've only put around 400 miles through it, but it definately feels firmer.
New and old, side by side.