Famo.us Mixed Mode Use Cases
Browser-based Gaming
Let's use a side scrolling game as an example. You need a character with something representing a shield revolving around that character (in the form of an orb). You can animate that character in the DOM, while you can create that orbiting orb in WebGL. This is highly performant because it's offloading the orb onto the GPU. With the DOm, you can easily render sprites. Melding both of these together creates a high performing game entirely in a web browser.
Webpages
You may be building a webpage and you want a button with a robust drop shadow on it. This would be very expensive to render in CSS3. Instead, you could create that drop shadow in WebGL.
