Hi folks! Long time lurker, first time poster.
Such a thing DOES in fact exist; running it now on one of our test devices. I doubt it will ever be released though. It's stable, but pretty slow. 4.2.1 runs a lot faster. :(
Post count is too low for an in-post image, but I have a screenshot on my Flickr account: farm4.static.flickr.com/3597/3513967362_a04f3fc44b_o.png