I've always waited until the stable version was released. I couldn't wait with this one. But I'm very happy. The Kemper hasn't crashed or has any glitch and RM has only crashed a couple of times while moving files around, the rest works great.
Having said that: I didn't really feel I needed an editor. My rack is installed on my home studio and I was happy enough using the buttons, etc. But the way you can manage presets, cabs, and set everything now opens a new door, making it even easier to work with.
Kudos Kemper team!!
Ps. Something to fix on RM: Make the "My rating" stars smaller, please