I don't know if you were thinking about this but lets assume that governments are really going to cut 10% out of everyone account money. Then what will probably happen, when they will do this with mtgox accounts? Are they going to cut your money stored there too?
Gox's main account in in Japan so the answer is no for most of us.
I also suspect they won't go after business accounts in the same way as individuals as it would probably bankrupt entire industries.