I
imakestuff
Beautiful model, but when I loaded into Twinmotion many of the textures were invisible due to the normals being the right way around. I bought the model to save time modelling as I've got a very complex scene to produce in a short time. I just imported the model into blender and it also shows many of the normals the wrong way around.
Depending on what software you are using, you may not have any problem if it doesn't use backface culling. I'm still going to use the model. It is fantastic. I'm just going to have to reverse the offending normals.