Start voucher as Voucher Match to PO Receipt, but switch to Logged Voucher

Looking for advice on whether we can configure voucher entry (P0411) to give the user the option to Voucher Match (using P4314) if the PO receipt exists, and then if it doesn't, to be able to change gears, and enter the voucher as a Logged Voucher.  The client does not want to have to enter all the header information in, only to find that it is wasted effort because the PO receipt is not there, and they have to back out and go to the version of P0411 configured for Logged Vouchers. 

If this is not possible from one version of P0411, are there any good tips for making this exercise less cumbersome for data entry people?