HI! I have a question before purchasing the asset. Is it compatible with materials that use alpha clip? For example I also use See Through Shader which modifies the alpha of the materials at runtime. Is it compatible?
Thanks for the reply PatrickKa, yeah I was already thinking of a similar solution where I would generate an occluder to match that mesh (that mesh is generated via spline). I will try to do this later on when I have some more free time for experiments. 
Perfect Culling attempts to automatically identify transparent materials. However you can always override it (for instance by adding a PerfectCullingRendererTag or by adding pc_trans to the name of the material). All of this happens in the Editor during the bake process.
Perfect Culling will treat the entire mesh that uses the material as transparent though. For instance if you clip based on texture inputs that would not be considered and would still be fully transparent.
Unfortunately I do not know the linked asset thus I also do not know whether there would be any issues and/or limitations.