I would like to be able to have a different invoice footer for invoices that go to members versus non-members.

We accept cheque, credit card, and wire transfers from members, but we only accept credit card payment from non-members. It's necessary to include acceptable payment methods, as well as the correct business name to make cheques out to in the email template as well as on the footer of the invoice. However, we obviously don't want to include this information on the invoice email and on the invoice for nonmembers -- we don't want to confuse them by thinking they can send a cheque instead of using a credit card.