I hear you! I bought Shader Sandwich myself because I needed to make a custom unlit shader for one of my projects. Shader Forge seems to be a fine tool, but it was overkill for me. SS got the job done very nicely, and when my "edge case" shader had me confused, SS's developer was very helpful. To answer your question, I can't personally run TC2 yet because I'm on a Mac, but I would expect Shader Sandwich to work fine with TC2. The outputs of Shader Sandwich are just standard ".shader" asset files, so they should not have any compatibility issues. I have read online some issues with SS and deferred rendering, but I personally have not encountered any issues there. TC2 probably won't have direct support specifically for SS the way Nathaniel says he's doing for Relief Terrain Pack (another awesome tool, btw), but neither does TC2 restrict what shaders you're allowed to use. I'm also using Tomasz Stobierski's "Uber" replacement for the Unity Standard Shader, and would expect the terrain-focused shaders from the Uber package to also work with TC2, again without Nathaniel's specific automated integration.