I know it's around a month until the Public Beta comes out, but would you guys agree that it's safe and stable enough to use as a daily driver?
For this beta 1, you know, Apple will do it much better in the next beta version. But, once beta version is stable enough for daily use, you can use it as the daily driver.
I have immediately updated my iPhone 6 Plus daily driver to the beta 1 of iOS 9, and the old iPad mini. To be honest, they works good, but beta 1 is really laggy on iPad mini.
Ironically, Apple beta software, especially recent beta software, such as iOS 8.4, is stable enough. And, continuity in iOS 8.4 beta works great, while in iOS 8.3 nothing works correctly, in my iPad mini and iPhone 6 Plus.