I'd say the advice is to use them whenever possible as the number of CP operated flights continues to dwindle and who knows if there will be a Canadian for much longer. The CPlus agent said that since status benefits are rolled into AP on Jan 1 the benefits are as well (of course AP never had such stickers). In the end she was not 100% sure of the answer. You would think that the stickers are an obligation of CP that was assumed by AC when it bought the CP shares. Use them quick so you don't have to have a battle later! PS - I gave up on Club in April as there are no longer any benefits that make the level useful and I get better service on Westjet.