- Perhaps dropping SWP and adding either Sth America or Africa will get you more miles?
The Canadian exception was removed some years ago, only to come back even better! Now you can purchase the ticket wherever you want. Here's the current rule:
When travel originates in a country for which a specific local currency fares is published and the ticket is sold in another country, the fare will be that published for the country of origin converted to the currency of the country of sale at the bank selling rate.