Anyone added project support to QtDesigner?

I prefer QtDesigner to QtCreator's built in designer as there's more space to work with and it seems more flexible. However, it can only load ui files, it would be much better if it could open your .pro file and show a list of the ui files found within it rather than having to browse to them.

Since the source code is available I was wondering if anyone has done this yet, or if there is some other way of opening the ui files for an application without opening each form a file open dialog.