Assign Bank accounts to Customers/Suppliers

We have 5 currency accounts and it is too easy to post receipts or payments to the incorrect bank account when posting within the customer/supplier account - as the bank account always defaults to our sterling account. Incorrect postings to bank accounts are a pain to correct. If there was a way to assign a bank account in the correct currency then a warning could be issued if the incorrect bank account is about to used. We had this with SAGE 50 and it was very helpful as we have hundreds of monthly transactions.