I was in a porta potty line talking to other riders a few days ago. One was a woman with electronic shifting. She said that the battery life is not as long as she expected. She started RAGBRAI with a fully charged system and on the last day it was down to 50%. We were talking about what you would do if you were about out of charge. I said I would shift to the small ring. She said she would shift to the big.
I would be more interested in it if was available for a triple. I have small hands and I have some arthritis. The electronic shifting would help but you still have to grab brake levers to brake and that is harder for me than the shifting.