It would be really interesting if electronic shifting took care of it. I really wanted to put electronic shifting on my travel bike, but eTap batteries don't last long enough and Di2 doesn't get rid of the cables. The advantage of no force required to shift also appeals. One of my bikes has relatively stiff shifting, and it can be a real pain on longer rides. In fact, it's possible that the force required to shift the front derailleur on my road bike contributed to my hand issues. I know someone who has eTap on his long distance bike, he seems to like it. I'll have to ask him how long his batteries last next time I see him. They are small and light enough to carry a spare set on a 1200km brevet, not sure how that would work on something like TABR.