If Canadians want to use Wallet, it's not that hard:
Get a Cupcake brand Mastercard (from Shopper's Drug Mart). Brand matters, I know this one works.
Go to the US website, 'Register Your Card', put in a ZIP code (I used 90210).
Supply whatever name, address to Wallet. It might check that the State is right, so use California. Cupcake just verifies that the ZIP code is right.
The exchange rate was pretty competitive (I spent some, I can't confirm whether they'll give you 50 USD). I used it at Tim Hortons, Rexall, no problem, and it seems to exchange at about parity (1 CAD = 1 USD). The only pain is that these cards cost 5$ in addition to the balance.
On a side note, can someone port the new Wallet app? The receipts look a lot more useful
I asked for that brand and they told me they don't have any called cupcake
Sent from my Nexus S