Apologies to anyone that feels I crossed the line into too much advertising. I was asked to write something on this product, and I think I failed to editorialize on it properly.

I did think this particular feature was cool, and it is different. Idera's product is very cool as well, but it gives you a read only look. This one actually allows write back, so you could in fact, "mount" a database and test, or run your application against it and see where something failed. It's unique (for now), and I think a fairly innovative integration into SQL Server.