This is generally the same as what Tando does in Kenya. And serves as a bridge between bitcoiners and normies.

One of the great advantages is personal financial privacy. The merchant or person who receives the funds only sees the name of the payment service provider, and not that of the sender, like a normal mobile money transaction would.

Just don't send to the wrong number. Along the same lines as bitcoin being irreversible, it's unlikely a payment through BitSpenda, sent to the wrong mobile number, would be reversed by the Mobile Money network operator.