I have responded to this on their web site's feedback alias. The IFS issue they point out was not specific to SBS but was a documentation problem that affected all Exchange servers. The problem was brought to our attention quite quickly and we published an updated article the same day. We regret the mistake.
We did test the utility against SBS prior to ship, but we definitely could have engaged that team more and done a better job with it for their scenarios. We are now working with them more closely and have already made a number of rule modifications that should improve that experience (these should be published this week). There are similar issues with regular single server deployments of Exchange and these will be similarly fixed.
Regarding feedback, we have several channels available, including the newsgroup, a feedback alias (exbpafb@microsoft.REMOVETHIS.com - which could be better advertised), and even posting to this blog. I believe anyone who has tried these has found that we are being pretty responsive to questions posted, so yes, we are listening. In fact, we are eager to get this kind of feedback so we can continue to improve the tool.
Thanks.