I never really used the tool all that much, although I installed it on each work machine and at home for practice. The problem I had is that it’s a tool geared toward designers rather than developers. Of course, for designers, that’s not a problem. The problem for designers is that they’re going to be forced into a sub-par experience with Visual Studio (unless, of course, they opt out from Microsoft technologies entirely).
At this point, what better web design products exist on the market?