I've not used this yet, and it's still a preview, but there you go.
I've used Blend from time to time, but for all of the reasons others have mentioned I don't use it regularly. I want to change that, and maybe Blend for Visual Studio will finally allow that (mostly a cost issue), but I'll have to dedicate a lot of time in figuring out how to use it efficiently. Currently, I do most of my work directly in the XAML, and Blend is a poor tool for that method of work. My ideal tool would be as good as Visual Studio (OK, better) at editing XAML but with a designer as good as Blend.