Hi, author of the post here. I'll admit I kept the premise simple here in order to provide a more introduction on how to "roll your own" effects without too much overhead.

The sort of thing you've described seems to have been implemented pretty well as a zepto plugin: http://blog.kojo.com.au/flickable-zepto-plugin/ (in particular this demo: http://blog.kojo.com.au/demos/flickable/demo2.html ) which works wonderfully on my Galaxy Nexus, but I haven't had much of a chance to play with this yet!