What is the impetus for every day use?
this will become clear once bitcoin leaks into the supply chains.
merchants can offer discounts for bitcoin, just because of the customer->merchant transaction.
there are savings to be made all the way up that supply chain.
they would have the advantage over their competitors.
consider this, I can buy something from an online merchant in france, the chinese supplier could have a replacement order on file and received payment within one or two hours.
newegg started with the 10% discount, but don't have it now. Why? Perhaps, credit cards issuers had a word with them?
Do you know that many stores are not allowed to sell the same goods for a cash discount vs credit card? This (pressure form credit cards issuers) ought to be illegal.