1. Bitcoins will take off because it has tiny fees for wealth transfer.
2. Future mining to keep the blockchains up will be supported by transaction fees.
If all this mining power has to be kept up as the 25 bitcoin bonus runs out then the transaction fees could well end up just as high as the current 2.9% + 0.3 seen everywhere.
1) Tax the holders of coins
2) Tax the users of coins
Bitcoin starts with 1 (mining rewards) and then moves onto 2 (transaction fees) for long-term stability. I think this is dumb if your goal is widespread adoption because it taxes the activity that causes network effects to grow (transactions).
PPC sticks with 1 for the lifetime of the system (through a slow-growing monetary base), strengthening my belief that PPC is a strictly better design than bitcoin.
Assuming that your Bitcoin money can be used at all. The government does not need to freeze your Bitcoin wallet, they only need to stop you from selling your Bitcoins for whatever fiat currency is used in your country. Until the government starts accepting Bitcoin payments for things like taxes, court settlements and fees, etc., businesses will need fiat currency, and they will demand fiat currency from their customers. Anyone operating a money-changing business will be targeted by the government; fail to do all that the law requires, and you go to prison.
The point is not about murder or any other crime. The point is about trying to evade laws by crossing borders. At best, your strategy would shift the problem from regulations on currency exchange within your country to regulations on importing currency to your country; you still do not get a situation where your government has no power to freeze or seize your money.
So sure, you can have your offshore savings in whatever currency you want, but at some point you need to spend that money locally. Bitcoin does not avoid this in any way; it actually adds an additional step to transactions, since you need to convert Bitcoin into your local currency (even businesses that "accept Bitcoin" usually accept payments through services that exchange Bitcoin for some fiat currency for a small fee). You might dream of a world where Bitcoin never needs to be exchanged, but that is not going to happen until governments start accepting Bitcoin payments for tax purposes (and why would any government do that?).