As a data point for others searching in the future, despite not being eligible for earning miles, AirMiles redemptions do appear to be in a proper fare bucket (not X, like AE rewards).
My flight to YZF is showing upgrade eligibility with 7 eUp + $125. Since we are more than 1 day out and less than the 10 day window, I can deduce it is a Standard (S,T,L) fare (ticket only says Standard).