Some guys value BTC as is while others looking on the fiat value of it. This topic doesn't need further argument because we are talking about business here. In the end, The owner will be the one who will decide what will benefit him the most. And I believe who will consider the fiat value for payment unless he has allocated BTC funds for the campaign for this year.

Of course 1BTC = 1BTC but let's be honest, the fiat value of BTC is what we are valued in BTC the most.