Different paper sizes for invoices and quotes

Title says it all. 🙂
My quotes have a long set of terms & conditions at the bottom, so I have created a new paper size which is long enough to keep this on one page when made into a PDF. However, it is way too long for invoices, which should use a standard paper size.

Could we please get the option to set different paper sizes for invoices and quotes.

Thanks for your consideration!