I could if I wanted bitcoin and if my customers had bitcoin. Realistically though it's going to amount to my customers buying bitcoin to pay me and then me converting immediately back into hard currency. So, we'd both pick up some fees along the way. Prices would nominally be set in some other currency, probably the same currency as my expenses.
That's not really a currency. It's a payment processing service.
I guess it has to go through this sort of thing while its small.