A developer making a game that is literally packed in with the Vive you have pre-order has not only said it works in room scale with Touch, but has announced on it's official website that the Touch version
will support room scale.
What bit of that is theoretical? Why would a developer who is working closely with Valve and HTC lie about what their competitor's controller is capable of?
If opposing cameras work with Oculus's SDK (and they do, evidently) what is that but official support for room scale? Sure they aren't pushing it right now, and think standing will be the bigger market segment, but they've confirmed more than once that Touch supports room scale. Developers have confirmed more than once that Touch supports room scale.
Yes, Oculus are currently lacking something like chaperone. That may or may not change...
But there is nothing theoretical about saying it supports room scale. We've had numerous independent confirmations that it does. I can't fathom why a developer working on a game bundled with the Vive would lie about it.