Switch entry type based on the category
The above isn't too clear, but what I was trying to do is use different templates for  different category landing pages. It works with the following:

{% switch category.slug %}
    {% case 'features' %}
        {% include 'categories/_features.html' %}   
    {% case 'news' %}
        {% include 'categories/_news.html' %}
    {% default %}
        {% include 'categories/_news.html' %}
{% endswitch %}