Two-way Sync with Sketch

Currently, saving the .css / .scss / .less file updates the .sketch file, and produces visual changes within Sketch. @JohnCoates's recent updates are excellent and allow a big precision jump in layout specification.

However, one of the great pleasures of Sketch is the GUI. It's simple, intuitive, and sometimes faster to position components this way rather than code. It would be great if changes within the .sketch GUI (i.e. x/y co-ords, width, height, color etc.) are synchronised to the .css file.

I realise this may not be practical or useful with .scss or .less files, be presumably would work for plain .css. Perhaps there's a super clever way of making SASS and LESS work in a live sync workflow too?

Would enjoy discussion about this as a concept / extension to CSSketch