Stash hunks (interactively) by selecting then in a "Index Editor"-like window

I would really like the ability to stash hunks from my working directory into a named stash by selecting such hunks from in a "Index Editor"-like window.

This would basically be a user friendly interface to the awesome git stash --patch command, and would allow avoiding to do git add -p & git stash -k. The ideia is obviously taken from Mercurial shelves extension (and the support to do "graphical" stashing provided by some other tools).