You can partially achieve this by copying SPQ questions into an event, however you can only do this 100 participants at a time. First invite 100 suppliers to the event. Second copy the SPQ questions from the library into your event. (Make sure you include participants responses during the copy). This will then allow you to use the Event Export/Import to export the attachments.
I would encourage you (and anyone else) to submit an enhancement to track this issue.
Thanks
Jeremy