Incorrect Vertex Normals Blender Sketchfab importer (Hack)

If like me you have had problems with Vertex Normals pointing only up when importing from Blender, here is a little hack:
Activate smooth shading and Autosmooth.
If it is an organic type model you can set the auto smooth normals to 90 degrees + and it will smooth out hard edges, this seems to work almost in every case I have tried.