RedBean Models with Composer

I've finally got to the point where I want to use custom model classes with the RedBean ORM. I personally think this sure speaks volumes for the technology after already using it for various projects for around a year because, as a result, it's reconfirming it's ability to provide 'schemaless' development compared to other ORM technologies. (See DBIx::Class, Doctrine, ActiveRecord etc). Being a Composer convert I automatically wanted to have my models residing in a 'namespaced location' inside my (Empathy) web apps so that they could be auto loaded for me. Although I appreciate the RedBean creator's views on namespaces in PHP, because I think less is often more, I've simply always been a fan, especially since I started to use Composer and becoming aware of the PSR 0 autoloading standard. So assuming I have some 'Acme' components in my web app I would declare them according to the composer documentation as such:

{
    "autoload": {
        "psr-0": {"Acme": "src/"}
    }
}

I could then have my models stored in 'src/Acme/Models' but how would RedBean and specifically the event listener that belongs to FUSE know about them? I needed to follow the howto on the RedBean wiki for creating a model 'formatter' class. This class (that resides in the same location) would then be loaded and registered with RedBean in my application controller superclass as such:

require('ModelFormatter.php');
\RedBean_ModelHelper::setModelFormatter(new \ModelFormatter());

And the contents of this class:

class ModelFormatter implements RedBean_IModelFormatter
{
    public function formatModel($model)
    {
        $model = '\\Acme\\Models\\Model'.ucfirst($model);
        return $model;
    }
}

The model classes themselves would then look like this:

namespace Acme\Models;

class ModelFoo extends \RedBean_SimpleModel
{
    public function dispense()
    {
        //echo "I'm a shiny new bean with a namespaced model class!";
    }
}