As a connoisseur of jumpseating to Canada, the issue is the gate agent.
You can't be in the physical jumpseat, but one in the back of the bus is fine.

Consider riding with Air Canada, Jazz or WestJet.
AC jumpseat number is: 800-413-1113 (You can list on either AC or Jazz)
WestJet's number is : 888-937-8538