The Path Constraint works great as well. I find the Parent bone method allows me more flexibility in the animation but can be a bit more confusing to animate rotate on one bone and the Translation on another.

I would really like to see the graph editor allowing, you to better control the attributes(Scale,Rotation,Position) rather than only the velocity and I think it something which is being worked on from the Waffle.

https://waffle.io/EsotericSoftware/spine/cards/580bacfc29fef328007f9d96

I've been using another bone to IK with a pivot separate to get the Arc. See screenshot

The Clipping looks really exciting! Would it be possible to use Curves as well?