Hi all, I too recently lashed the cash on an XTR Di2 2x11 groupset for my Pinarello Dogma XM. Cable routing is all internal and there is no external cables visible - in fact less so than the SRAM XX1 I had before. Like GrantRH, I too opted for the single shifter solution. It is simply amazing. I also got the Shimano D-Fly, which is the bluetooth wireless link. It tried in vain to establish with internet searches if the D-Fly actually works with the XTR Di2. Eventually I couldn't get clear confirmation, but took the plunge and ordered it on Amazon. I had the D-Fly installed out of sight in the seatpost with the battery (not next to the real derailleur as recommended by Shimano). It worked 100%. I have a Garmin Edge 1000, quickly paired the D-Fly and now I have real time display of the front and rear gear position on the Garmin Edge. I am finding this very helpful because the Di2 display turns off immediately after changing gears, so often one doesn't know which gear you are in. The link with the Garmin sorts this out beautifully. After pairing with the Garmin, the display is automatically adjusted for the number of gears in front - whether you have a 1x11, 2x11 or 3x11. No settings required. I believe this works with all Di2 enabled Garmin Edge's - the 510, 810 and the 1000. My initial assessment is that its worth every penny. Put this one of your bucket lists...
