So.. I think I've managed to get silent (vibration free) notifications in Android Lollipop.
1) Go into Sound and notifications>other sounds>vibration intensity. Set it to zero
2) download https://play.google.com/store/apps/details?id=com.dfs
and then cycle through to default vibration 3 ( e.g. choose 1 then 2 next 3).
You appear to have utopia. Silence and no noticeable vibration. Will test and see.#Silent