Shimano's 11 Speed Groupsets Include a Beanuckle Derailleur Hanger

direct mount interfaces are claimed to create a stiffer interface between the frame and the weird derailleur. Shimano's existing 11 speed, actually all its road bike groupsets,. include what they call the beanuckle part of that derailleur which sits just behind the dropoutbetween the cassette and mounts directly to the derailleur - it's not very often seen. Simon: Have you used a bike with a direct mount derailleur? And do you have any thoughts on it?