Recurring Invoice in Foreign Currency Merged

I would like to be able to create recurring invoices that are specified in a foreign currency.

I have a customer that I invoice for the same amount each month but in USD, it would be good if I could set this up to be automatic and just have the exchange rate populated with the prevailing exchange rate on that day.

This would be useful for service companies who have foreign customers or those who have negotiated payment in a different currency.