I understand your concerns about this and I thought about them before extending this offer to APUG readers but I decided to post with the following thoughts in mind:
1. This is the Frame Destination sponsorship sub forum which something that my company pays APUG for.
2. Mark McCormick-Goodhart is a film shooter although he often scans and prints digitally. He is also planning on adding support for traditional darkroom printing processes. If more APUG’ers doing darkroom work become members and submit images for testing he will probably start doing so sooner rather than later.