May be that IB can routing order to Canada, to Toronto Stock Exchange)? In the table "Contract Selection" - ".... CAD TSE" row! How is in that case with 25k SEC Rule? This is NOT USA and NOT USA stock!
non-cleared (institutional accounts) can trade toronto via IB. cleared (retail) should be available in a few months. If you try to route an order it will be rejected. BTW, good news (i probably just jinked it) may be coming for Canadian residents in a few weeks.