I have been trying to find any official statement from Microsoft on whether or not SCEP is considered to be a "Cluster Aware" AV product. (Please see this link for more info on what I mean by that http://support.microsoft.com/kb/250355 )

Does anyone here know if it is for sure or can you link to an official statement from Ms?

I've also been interested in this answer and you're right - there is no official statement. My assumption, therefore, is that it is not cluster-aware. If you find something different please post that here.