I dont think this is practical, you will pay for transfer fee just to pay clothes, food, water, appliances etc were as you can actually pay fiat without any additional fee. So far i don't know any mall or supermarket that accepts bitcoin here in my place.
Why is it that this is not practical? Bitcoin used to be called as crypto"currency" and that's what currency is used for right? There's no sense if you'll call bitcoin isn't practical for these things and with supermarkets that are accepting bitcoin they are doing the right thing. They are adapting on what's innovating and trending with current technology so you should consider that.