Depends on how this works. I imagine it would be a temporary lending policy and not a straight up transfer this game to someone elses account. Like Pyro could say "Hey idol, here...play my copy of Skyrim" and I could play it. But at any time he could revoke my access to it and it would still be on his account. I would also guess there could be a general time limit on it as well, like a week? Just so people couldn't keep them indefinitely. Also wonder if it would still support offline mode.
I dunno, just speculating.