As long as the deposits are refundable, then there isn't much to lose. Since the car officially didn't exist until this week, and Honda still hasn't released an official price, the dealers were basically on their own as to how to handle those looking to buy.
For my dealer, the deposit is basically to secure a spot on the wait list, and is refundable if the final specs of the car don't meet my approval. And since this dealer is one of the largest in Western Canada (as far as volume, and more importantly the volume of previous NSX sales) it is a good bet that they will get a significant allocation of Canadian NSXs. Other dealers may take a more wait-and-see approach, or even a highest-bidder approach.
ultimately, the demand of the car will determine how Honda Canada and the individual dealers react. Worst case scenario is that demand is lower than expected and Honda has no problem supplying enough cars to Canada since there are so few orders. More likely is that there will be an initial huge demand so that the wait will be up to a year or more, before demand recedes.
), but they are not taking deposits. I hear other dealers are taking deposit and even going as far as signing purchase orders. But these deposit/orders are with Dealers (not with Honda, as in UK), and who knows which dealer will get a car. 
