Well, to put it politely (without laughing): don't care if you own the game or test on someone else's copy, but two thoughts spring to mind:
1. You need to be able to guarantee/commit to "most" of the test times, which may be hard if you don't have your own copy.
2. If you are loading test material on someone else's PC, we'll require an NDA from them, too.
Largely, it strikes me as impractical - sorry.