I just had another look at SMCGs Site and found a new page with a little more information on the assessment scheme. One part is a small Q&A, which contains the following section:
Do I get to see the questions beforehand?
No. The questions will remain with the Licensed Assessor and only be asked at the time of the assessment. The Vendor should treat the tool assessment element as if they were demonstrating to a prospective client how they adhere to ITIL. This is to ensure a level playing field where some vendors have more time or resources to prepare a demonstration to pre-released questions. Therefore the demonstrator needs to be very fluent in both ITIL, the application and their documentation.
To me this looks like (could anyone confirm or deny this?) the questions will not be open to the public. If this is true, a buyer will not know why this piece of software advertised by the OGC and what the benefit of the rubber stamp is.