80% of all my work is now WPF/C# and I never use the toolbox, drag & drop or the properties window. It's so much faster to just start typing the XAML and let the IDE finish. I would go nuts trying to build a large project using the methods shown.
To me the only thing the toolbox would be good for is if you could right click and select "Copy Template" to get the XAML of the control. Unfortunately you need Blend to do that and it's not compatible with VS 2010 projects.