In order to build both x86 and x64 versions for Windows, you usually have to add two different Visual Studio exporter configurations - one for each architecture - and let them use different target folders (let's say Builds/VS2013 and Builds/VS2013_x64).
Now, it would be nice if you could give those exporter configurations different names inside Introjucer, instead of referring to both of them as "Visual Studio 2013". Not only to make it more clear, but also to remove the confusion when trying to use the "Save and open in Visual Studio" option. It presents a popup menu with all the relevant Visual Studio exporters, but they currently have the same name. Not possible to see which one is x86 and which one is x64.
So, could it be possible to give each exporter config its own name?