RunExcelDnaSetDebuggerOptions: open Excel file at launch

Isn't there a way to load the .xll & open an Excel file at the same time?

I usually add a template Excel file with which I develop my add-in, which I always open when debugging.
If I understand RunExcelDnaSetDebuggerOptions correctly, it overrides the "Excel" profile on every build, so I can't just set add the Excel file to the commandLineArgs there.

So I'm left wondering how other people are doing it, if they are doing it.