No. Unfortunately, I did not have a chance to play with QTP (too expensive!) so I have no idea about how to run a QTP test.
However, it is generally VERY simple to write an XStudio launcher !
Do you know well Java ? If yes, then you can develop it by yourself using the SDK provided. I can support you in this task if you wish. I already developed ~10 different launchers and each time it was actually only a few hours (debugging included). If QTP provides a command line to execute 1 single test case then it will be less than 50 lines of code.
Let me know if you want to give a try. Again, I offer you my support (via skype) on this. Im very interested because the whole community will be able to benefit from your launcher at the end…