Finally got the Hammerhead 5.0 out from under my desk at work and cycled it home for the wife yesterday. Thoughts - very upright compared to the 7.0. Marathons were stable, bike felt fast. You can get a 1 bolt NVO stem from Greyville.com for about £30 if you want to fit a quick release bolt (although NVO do not rec this). Will post photos this weekend.