Originally Posted by
wthensler
Also contemplating as I run four bikes with Di2 and thinking SRAM Red eTAP, but no experience.
Top buttons for shifting Di2 are, IMO, a joke and harder to access and use than the paddles. Also, newer Di2 locks you out of two gears, so it’s still a 20 speed, LOL! LBS said it can’t be overridden.
Last I knew the cross-chain lockout could be turned off. There's a specific check-item that is named with obscure techno-babble that you can toggle in E-Tube.