I`m not sure we can talk about a consumer base in bitcoin yet, we are too few to make any study on this.

If bitcoin price goes down, thats bad for anybody who holds bitcoin obviously, and prices go down. Only good for loan takers, because they get chep loans.

If price goes up, then its good for holders, and consumers, because they get the same stuff cheaper. However loan takers get fucked as their loan size is increased too.