I was on a road bike that I hadn’t ridden in a while last week. It felt like the seat was low, but I rode it for a dozen miles anyway. When I got home and measured, it was a good centimeter low - I guess the clamp may have been loose.
Anyway, I set a couple Strava ‘personal bests’ on downhill segments… I guess if they weren’t so clunky or heavy we’d have ‘em on our road bikes.