Update:
I’ve been watching video tutorials and experimenting with 3D-Coat all weekend, and I must say that I’m getting more and more enthusiastic. Among other things, the new brush engine feels better than the old one, the UI has been slightly improved, the amount of different brushes for the Voxel mode and the Surface mode has been reduced, resulting in a more seamless experience in switching between the Voxel and Surface modes.
But there are also a lot of small but pleasant refinements everywhere, such as: when you use Shift to snap to a view, the view doesn’t freeze like in ZBrush, but you can still pan the snapped view to your liking. And the hierarchical object layers make working with objects a breeze. The object layers are like a marriage between ZB subtools and objects in Blender’s Outliner.
Among the things on my 3DC to-do list is trying out the 3D-Coat Applink add-on for Blender.
I’ve also started a thread at the 3DC forum trying to determine 3DC equivalents to Blender / ZBrush brushes: