Just got a new G5. It comes with a charger DE-A79, which looks exactly the same as the charger DE-A93 for my GX1. Both chargers have the same spec etched at their backs too. Is the charger DE-A79 (for battery BLC12) interchangeable with the charger DE-A93 (for battery BLD10)? Has any owner of both GX1 and G5 tried to interchange them?