Need to show Vendor Attributes in the summary area of the Purchase Order form

Vendors have some general purchasing requirements that are indicated in Attributes on the vendor profile:

We need to display these values in the summary area on the Purchase Order form for comparison as POs are being finalized. We know doing so on the main summary area would require some customization, but we were trying to figure out if we could tie a UDF to that attribute based on the vendor indicated on the PO.

Any thoughts would be appreciated. The hope is we are missing something simple...