This is essentially what Alloy is doing under the hood for you with backbone

index.js

// Fetch some User
var someUser = Alloy.createModel('User', {
  id: '1234'
});
someUser.fetch();

// Create new Profile controller
var someProfile = Alloy.createController('Profile', { user: someUser });

// Change model
someUser.set('name', 'New Name');

Profile.js

var EVENTS = 'fetch change destroy';

var args = arguments || {};

// remove existing bindings to prevent unexpected behavior and memory leaks 
$.user.off(EVENTS);

// add bindings to new model
args.user.on(EVENTS, function() {
  $.name.text = args.user.get('name');
});

// probably want to delete the bindings on window close
$.win.addEventListener('close', function() {
  args.user.off(EVENTS);
});

$.win.open();

Profile.xml

<Alloy>
  	<Model src="User" id="user" instance="true" />
	
	<Window id="win">
		<Label id="name" text="{$.user.name}" />
	</Window>
</Alloy>