This is smart to do, he has a good financial advisor. He will have money there that no one but himself can access, and that money is guaranteed to never be debased (killer app for Bitcoin if you ask me). This is definitely another use case for Bitcoin, the super rich buying BTC to retain their wealth. I don't quite understand this, but couldn't the court order him to pay those BTC to his wife if necessary?
If it became known to the public, then it is not smart at all, simply owning Bitcoin is not enough to avoid getting your money taken away by the justice system. For that, you would need privacy too, and he has clearly failed here. Now he may be forced to give up his coins, and even if he'll try to lie that he has lost them, he'll have a hard time spending them, because he'd had to go through exchanges and banks, which would immediately notify the law enforcement agencies.
