Wow, great tool from Xolotl Studio.

Check this out: https://gumroad.com/l/fTRFN

Tips:

• Use Tiff files and maximum 16 bit/channel (for Tiffs 32 is not supported by Substance Painter).
• As displacement the Height map is connected to the Displacement shader (which is also correct), but you have change the Alpha Offset to -0.5 in the Height map’s file node, or
  at the displacementShader node change the Scalar Zero Value to 0.5 it’s the same thing but the Scalar Zero Value is not supported by the Viewport.)
• The script using aiNormal map nodes, so you can’t see the effect in the viewport, but in exchange you can change the intensity (usually this is required to get correct results).

Cheers, D