Theres a maya and arnold solution at the bottom of the thread and references to mental ray solutions as it went on. No offence, but did you actually read it ?
Depends how many edge cases you want to come up with really since there's no one answer to anything. You could probably bake the SSS to a diffuse through Arnold or something but I don't trust their baking tools, it's something you may have to custom write. Such unique tools probably don't exist because it's they're for…