It is gone, and unlikely to come back. Sorry – Weaver Xtreme uses new menus, and they simply are not able to have movable switch points.
It seems that customization of the iPad menus in portrait is the most common request, but that simply is not possible at this point. iPads are treated like a standard desktop browser. This seems to be the most common treatment of iPads by the vast majority of current websites. Given that Weaver Xtreme’s design had to be one or the other, it seems best to follow the way that most of the web works.