Nice write up! Very helpful - thanks!

I am tempted to do the same on our Joint Venture. We ordered our bike with 4x10 gearing and it works great! I had Todd use a 9-speed Shimano XT derailleur with 10-speed Campy Record Ergo levers with a J-Tek adapter for the RD. The shifting is as good as anything I’ve had on any bike and I am reluctant to change. However, the Campy hoods are a bit small for my hands, so that’s the main reason for considering a change to Di2 3x11. It’s the best option to keep really wide gearing but with smaller jumps between gears.