Thank you Psy22, this is excellent to know. To corroborate some of what you've said, I also emailed about the waitlist and was told:
1) there is no formal waitlist 2) I got the same quote stating "In the event that funding becomes available, offers will be made on the basis of the rank of each application in the competition overall." 3) I was also told that priority is not necessarily determined by final score, as "this depends on a number of factors which are in flux." 4) If you receive funding, SSHRC will contact you (and there is an indeterminate timeline as to when this could be)
I scored a 5.03 in committee 5.