The question you brought up about whether governments are considering buying up bitcoins is an interesting one.
It looks like the classic Prisoner's Dilemma problem. All governments would be better off if bitcoin died out, but the first government to initiate a bitcoin-reserve buying program would be in a much better position than other governments if bitcoin does become ubiquitous.
I think in the world of American hegemony we lived in between 1990-2000 there would be no bitcoin buying, but in an increasingly bipolar world of East vs. West that is developing today along with a few fragmented rogue states such as North Korea and Iran, someone will defect and start buying bitcoin which will trigger a cascade of strategic buying.
Disagree about the creation of i-coin though. No nation has enough power to unseat a truly global currency like bitcoin once it becomes ubiquitous, unless they conquer a super-majority of the world.