I agree, Sinbob, that the Japanese are likely follow the same set-up of the G&S market as the Anglo-Saxon countries have set up for us. But I trust, that in the slipstream there will always be people who will learn about G&S and collect coins or buy physical.
Formally the Japanese owns 765 tonnes of gold, but that is only 3.2% of their reserves. We all know that most of those reserves are US dollars. This may be a way for the Japanese to sneakely tranfer dollars into phyical gold, just like any other nation in the world is doing (China) or will be doing.