After installing the NoesisGUI Project Templates in Blend for VS, I cannot use them.
They do not appear as an option when creating a new project.

Anyone have any advice on how to get this to work?

Nevermind, please close this thread.

I tried creating a project in Blend for Visual Studio, instead of creating a project in Visual Studio itself (that's where the template IS available)

Yes, the template is only valid for Visual Studio, we couldn't add Blend as target in the wizard.
You can create the project in Visual Studio and then open it in Blend though.