In reply to ianstevens:
> Probably just on a road, where droppers aren't (weren't) a thing. UCI will ban them anyway I suspect.
"The UCI Equipment Commission approved the use of dropper seatposts in road cycling competitions in 2014. Their use is subject to the minimum 5cm setback rule of article 1.3.013 of the UCI Regulations, i.e., when the dropper seatpost is set to its highest or lowest setting, the saddle setback must be in full compliance with article 1.3.013."
https://www.uci.org/pressrelease/uci-statement-concerning-dropper-seatposts...
It's going to be fascinating to see people looking for a competitive advantage with these - great descenders like Mohoric and Nibali could benefit and terrible descenders like Pinot could benefit. My be is that this is a wake-up call and suddenly altitude training camps will include dropper descending training and they'll be rolled out on stages where a fast technical descent is involved.