The PureMVC Framework Code at the Speed of Thought

What is the best practice for adding the main application to the stage?  I have been working on a pure AS3 PureMVC video player and I see two very diferent methods of adding the player to the stage.  The most common method http://etc.joshspoon.com/2008/02/13/how-to-create-a-puremvc-app-with-actionscript-3/  http://www.nutrixinteractive.com/blog/?p=85 in pure as3 projects I have seen is to add the component to the stage within the main class that calls ApplicationFacade.getInstance().startup( this.stage );.  The other method is http://hubflanger.com/building-a-flash-site-using-puremvc/ as in HelloFlash http://puremvc.org/component/option,com_wrapper/Itemid,144/ where the object to be added to the stage is defined within a component class and added to the stage by the StageMediator.