I will. To clarify, I was using the GPS and cellular on the watch — the phone was at home. I went for a ride last week, set up the same way, and the watch went from 100% into power saving mode at a little under four hours. On the S4 and WatchOS 5, that would happen around 5.5 hours.
One thing is for certain, the always on display transforms the utility of the watch when biking. It’s not only a lot more convenient, it’s dramatically safer, as I can keep my eyes on the road or trail more, vs fiddling to get the screen to turn on and stay on long enough for a peak on the S4.
I think there are a few things going on with the current battery issues, given my experience. First, I think that there can be background processes that get hung up in the upgrade process, as resetting the watch and phone made a profound difference on battery life. Second, I think the auto-brightness is too sensitive in the S5, ramping up too far and too fast outside. I am pretty certain AOD is not the culprit. I’m also pretty certain all battery life issues can be resolved with software updates.