Sure; let's say you're in a 'we take bitcoin' coffee shop, and they charge 700 bits for a coffee. Would get confused and think it costs 700 btc?
Think of the average consumer here, not the crypto-electro-engineer in her microcomputer lab.
If someone charged me 700 bits for a coffee... I would ask them to repeat the price again.
Also, why do you think cryptoelectroengineers(?) are the only ones who can grasp the SI system?