One of the other mechs in the shop went for a Cannondale EVO with a DuraAce Di2 system this year. Doesn't make him any faster but trim is automatic in any gear and he likes the sound. Long term durability and battery life apparently aren't issues but ... I still ride one bike with DT shifters and have no issues with that system myself.

Even a 12lb techno-wonder is just a bicycle and you still have to pedal it. Personally I like simple.