I'm building an 1x10 Cross/Road bike ( 48t in the front with an 185 gram SRAM XX 11-32 in the back - yes big gaps, but not as bad as you think) with Di2 RD and Using Record Brake levers. I was mocking up the installation of the Sw-7972 and found a perfect spot, by cutting the wings off the Sw-7972 they mounted quite easily on the Record Brake lever right where the thumb lever would usually sit on Ergo Levers. It feels very Campy like. As the hoods aren't modified from normal Ergo hoods, the slot and everything is still there.
Works great, and now I kind of have paddle shifters. Up on one side and down on the other, too bad Jason won't sell the sequential shifter and then I would use the FD and have 15 usuable gears vs. 10.
In running SiSL cranks but it's proving hard to get the sheath that goes around the axle and keeps the wires from rubbing from Cannondale, the rep is going to try one more time (My frame is a Carbon SuperX), but I'm not hopeful. Does anyone have a source?