Yeah, I'm a Canadian and I'm covering it with an LOC from TD, some personal savings, and small yearly loans from my parents. However, for foreign schools TD will only offer a $200,000 LOC rather than $275,000 (not sure if that is standard for other banks, though).
And I actually just got back from a meeting with the bank, and the account manager said that there's a pretty good chance I can get it without a co-signor. Though a factor in that might be my family's business with the bank and my dad pushing for it to see if I could get it without a co-signor.