Does anyone use(or heard of) Case Complete by Serlio for requirements, and if so, how good is it?

I've done a search on Serlio on this site and no results. I've also done a search on 'Case Complete' and all the results are for 'case' or 'complete'.

I just learned our company is looking into getting this to help with our Business requirements to have more detailed requirements all the way to saving time.

(My pet peeve is not to have more detailed Business Requirements, but more readable ones that aren't a hodgepodge podge of run on sentences and paragraphs with no lists or bulletting of requirements.)

Thanks in advance,