I grabbed this some time ago when I was looking for an easier way to move our tokens around to different maps. I tweaked the Lib: token because I wanted a quick way to set a start point based on hidden "Start" pins that I put on my maps to show me where I wanted the PC tokens to land.
I was wondering, but if you use it for that, have you checked out the autoteleport functionality I've build based on jfraziers ontokenmove add-on?
You can find it through my sig. (full overview). With this you don't have any summons any more, you just move your token onto an area and are automatically transported.