Trying to serve the Ember.js startup app with Express

Trying to get up and running with serving the Ember.js starter kit app via Express, running into an issue with rendering my data from Ember's app.js

ember's app.js:

App = Ember.Application.create();

App.Router.map(function() {
    // put your routes here
});

App.IndexRoute = Ember.Route.extend({
    model: function() {
        return ['red', 'yellow', 'blue'];
    }
});

express's layout.jade:

doctype html
html
    head
        title= title
        meta(charset="utf-8")
        link(rel='stylesheet', href='/stylesheets/style.css')
        link(rel='stylesheet', href='/stylesheets/normalize.css')
        script(src="/javascripts/vendors/jquery-1.11.1.min.js")
        script(src="/javascripts/vendors/handlebars-v1.3.0.js")
        script(src="/javascripts/vendors/ember.min.js")
        script(src="/javascripts/app.js")
    body
        block content

express's index.jade:

extends layout

block content
    script(type="text/x-handlebars").
        <h2>Welcome to Ember.js</h2>
        {{outlet}}

    script(type="text/x-handlebars" id="index")
        <ul>
        {{#each item in model}}
            <li>{{item}}</li>
        {{/each}}
        </ul>

When I run the app and view source, I can see that layout.jade is rendering OK; all of the expected HTML is there. The problem is that none of my stuff from index.jade is rendered with ember's app.js -- there is no ul element with "red", "yellow", and "blue" li's, though the title element is rendered from express's /routes/index.js, oddly.

I'm really unsure what exactly is going wrong, but I feel like things are leaking between Express and Ember. Reading around it looks like a reasonable approach to doing this would be using ember-tools and requiring that in my layout.jade-- but I don't see a huge difference between doing that and doing something as simple as what I'm doing with this.

Also, likely worth note; when I use the Ember developer tools extension for Chrome, there is no recognized Ember app-- which is what I've observed previously.

Am I better off with the ember-tools option, or is there something staring me in the face that I've likely done wrong?