Watch 8 classic one ui 9 beta

Not here. In fact, the one ui 9 beta on watch 8 classic, for me, has significantly improved battery life.

Then again, I haven't updated to beta 2 yet, because of the warnings I read about. So maybe this is different come beta 3.

Yes here. But only 1. Battery is draining rather fast. Full charge at 10:30 AM, down to 89% at 4:00 PM.

I haven't noticed any more of a drain on beta 2 ..other then the known issues

8 Classic for me battery is about the same getting about 1 d 7 hr