Has anybody out there worked with a product called mesh mounted flagstone? From what I have seen, it is flagstone cut into .5 to 1 inch thick slices mounted on a mesh backing. It can be installed over existing concrete walkways/patios etc. using thinset mortar, kind of like applying a veneer and then grouting the joints. It is available on the west coast but I have not found anyone using it or selling it back east.