it depends what you mean by uvw properties – basically, if a render content uses its fields for data, the python in that will allow you to expose and connect them (you will notice it is the same python code in both of the example nodes, it does not care whether it is dealing with material, texture, or environment)
looking at the xml for a 2d checker texture, if I switch the mapping from mapping channel → wcs box style, I see that the value of rdk-texture-projection-mode has changed from 0 to 4, if this is what you are looking for
edit: forgot that field is already hooked up in the example, which is also a 2d checker
