Hi Paul,
Great question and as a sample collector have asked myself a similar question related to Paulson and GPI. After going back and forth, i decided that i want to keep pre-GPI and post-GPI separate so my preference would be to put "Paulson/GPI" in its own category/listing, which means then should there be a "Bud Jones/GPI", "B&G/GPI", etc. If that's not an option, then my preference would be to put them in the individual manufacturer's (Paulson, B&G) as opposed to putting all of them under one GPI listing.

Best,
Greg