No, no experience at all, but I would suggest that the key is not going to be Moodle, it is going to be Promonitor. I know this does not really answer your question, but I doubt there will be too many, if any, Moodle users sufficiently familiar with Promonitor to be able to provide a more specific answer. Promonitor is a proprietal product from Compass Computing Solutions, a Microsoft Partner and looks like a fairly recent development based on the Company's previous developments.
The Moodle side is easy to work out, that is because it is Open Source. you need to decide what data you want to extract from the Moodle database, which you can do easily with an understanding of PHP and SQL. You really do not need to be using the Moodle interface for that, create your own, as long as the interface you do use is able to log into the Moodle database, you won't have any problem. You could even use PHPMyAdmin if you are using MySQL or your usual database admin tool if you are using something else.
Once the data you require is extracted, it has to be converted to a format that the Promonitor database requires. That is going to be the hard part. It looks like Promonitor is not Open Source so you're going to have to be careful you do not infringe copyright or break their EULA unintentionally. Their database is unlikely to be easily accessible, but it will likely run on SQL so you will be halfway there. The proprietal nature of Promonitor may mean that the developers will likely be more than willing to create the necessary SQL to do this part, at a cost.
Good luck.
