I used it for about half of the EAP. For the biggest problems were performance and some general quirks (which admittedly may have been fixed/adjusted by now).

I used it for about half of the EAP. For the biggest problems were performance and some general quirks (which admittedly may have been fixed/adjusted by now). It also didn't particularly provide me with a sense that I was being more efficient. Right now I use a combination of SQL Management Studio and Atlantis SQL Everywhere. SMS to manage entities in design view, and Atlantis because of it's much better intellisense and ease-of-use features.