Unite India is here: https://unity.com/event/unite-india-2019
there is no need to create a vdb, but it works yes
Super taf! ;)
You can even paint several texture channels (baseColor/metalness/roughness) per mesh, and multiple layers per texture channel, with masking support and adjustment layers using a regular paintbrush or a projection paintbrush.
Supported stylus are: Apple Pencil, Wacom Creative Stylus and Pogo Connect. Users can save their scenes to the internal scene format, import Alembic files or use the popular OBJ file format to import or export new models or basemeshes.
You can get more details here.