As far as I know a BO/COMC Gift card can be used on Friday. Shouldnt be any reason why it wouldnt as its a Blowout gift card. Biggest issue would be getting the gift cert in time.
Kinda curious on the Nov. deadline as well. My cards are at 35% and have 2 days to go. Bigger downfall, I've got 10+ batches due 12/2 that I had hoped would make it by Black Friday, but doenst look to be the case