Signed up for Beta back when it first became available in the Members app, but didn't get it then. Finally got Beta 3 (for some reason) on my unlocked S10, and it's already stable. Guess I missed out on all the fun *smile*. But liking the "dark mode" and the number of apps, including Google apps this time, that use it. Gestures seem fine, very similar to the way that they were, and the way that they are on the iPhone also. Not much change, really. Haven't gotten a sense of battery use yet, but have noticed that "time since last full charge" is missing in action, not happy with that.
At this point, don't see any reason not to stay with it until it comes out as an official release. Sorry I missed the early testing, though. That's always the really fun part.