Campagnolo Chorus, with 11 speed shifter running deore 9 Speed rear derailleur rapid rise (LOVE IT, thumb for easier gear, index finger for harder gear) with a 9 speed shimano 11-34 cassete.

I built this setup for me to travel to Sydney 6 months ago, lot's of hills. Its still running quite smooth, but I need some adjustment on the rear derailleur cable tension. I've run more than 200 km in this setup, and i love how i can use the high gear to save my knee.

Because the shifter is 11 speed, there will be one click that will be skipped when shifting. When used with 11 speed campy cassette, the shifting will NOT make the highest gear, so I only have 10 speed access when using a campy cassete.

Next experiment is using an XT 11 speed 11-42, to get 10 speed access high gearing with 11-37 (can't use the 42.)