Shifting in the drops? Yeah. No difference from Red there, other than the lack of lever throw.

Climbing mountains? No, but I did gain about 2000ft over a couple of hills. Maybe the test bike I rode just needed to be adjusted, but I got more than a few really clunky shifts while standing on the pedals and shifting. Same thing when shifting during full-power sprints. Di2 was better than Red, but the bike I rode wasn't that much better. Certainly not enough better to justify the cost...