Emberjs - how to render nested route template without parent route content?

Summary

I want to continue to use nested routes but without displaying top level content when the nested route is accessed. I'm not sure this is possible ?

Detail

Initially my requirement was to to display a list of, eg, foods and offer the user the option to add a food item foods/add . Using the outlet tag at the top of the list template allowed a form to add a food item to become visible at the top of the list, transitioning back to food after the add resulted in the list being displayed without the form.

New Requirement

The requirement has now changed and it's necessary to show the form without the the contents of the list and after a succesful add show the list without any form.

Question

I know I could abandon the sub-routes approach and create a route such as food-add but is there any other way of preserving the sub-route (and the corresponding file structure, which I like) but allow the the template for foods/add to be rendered without the list content ?