I have explored a more contextual grid/list transition - in the iOS 7 video app there is currently no grid/list option and in the current iBooks the gird/list is a (push pop) or iTunes U is a fade animation. This was made with Facebook Origami
Video of animation: http://youtu.be/z9FFJid7SE0
Animation with slower timings: http://youtu.be/oPwwMFTvIV4