Almost good,

Great idea: upload small, optimized pictures and make them animated by a WP plug-in.

Poor implementation in the details:
– pop-up window hides the whole product page (instead of transparent layer)
– pop up window close button only can be put to 2 unasable places (top middle or top right, not the corner of the image
– latest plug-in version even makes it worse, it enlarges the animation to full window, with horrible end-result in large screens

It would be a 5-star plug-in if these would be fixed.