I've just seen the pictures of the new pavement that is being laid by the side of the Yialos to Chorio mainroad.
It certainly looks very smart, but i would question the wisdom of the decision "to grout the gaps between the paving stones with soil" for drainage.
Come next May some poor soul will be pushing a lawnmower up and down it.
Fine gravel would provide the drainage required and i suspect even that would be a trial to keep weed free.