With regard to any comment on the motion, the way I understand the motion is that now that we've gone from “oath” to “solemn declaration” it doesn't have any faith associated with it, and it's more neutral from a “liberty of faith” perspective. My understanding of this motion is that if someone were to say, “So help me God” at the end of a solemn declaration, it wouldn't affect the validity of the solemn declaration.
That's my understanding of this motion.