Thanks gotak...I came across some winter tire ratings on the APA.ca website (
http://www.apa.ca/template.asp?DocID=97), which led me to look at the Yokohama IT-S GE-072 Geolander. As alternatives, I am also considering Bridgestone Blizzak LM-25 4x4 and Pirelli Scorpion Ice and Snow. These are all H rated (the Yoko is R, which seems unusual).
For Q tires, I would consider Bridgestone Blizzak DMZ3 and Michelin Latitude X-Ice.
I have asked my (U.S.) Acura dealer to price these out for me and then I will make a final decision. Based on a comparison between TireRack and TireTrends, there are some significant price differences.