I went up to the LBS that sells no bike under 2000 and found a repair bike that just had a nice shiny XTR rear derailleur put on. I saw the brake lever and no shifters.. pressed the lever down and it shifted. Pulled it up and it shifted the other way. SO COOL. What is this? Some failed design they used for a year? It was a hydraulic brake/shifter combination, where the brake lever actuated the shifting - like STIs on road bikes. What is this? Some failed design they used for a year?