I have an Oculus DK2 (and DK1), and have been doing room-scale with the DK2 for month, which actually uses an off-the-shelf webcam.
I have no doubt that the CV1, that uses a custom camera with higher resolution and wider field of view, will give even better results.
Using the Leap Motion in addition to the DK2 already gives you unbelievable presence in VR. You have to experience it. You truely have your hands in VR, down to the individual flex of any finger.
My killer-app for VR is MocuMocuDance, which is available from the author (and thus out of oculus shop DRM) and runs on both Oculus and Vive.
Thus I believe my best option is to use the Oculus CV1 (slightly better headset) coupled with Leap Motion.
However, this kind of oculus DRM restriction that is implemented as discussed in the article sure isn't pleasing me, and I would advise anyone to do like I did : determine what your killer-app is before choosing your VR hardware.