My bet would be the controllers, which would mean a Rift compatible release would be imminent when the Touch controllers are officially released in a month.
Most OpenVR/SteamVR titles more or less "just work" with Rift + Touch. Obviously the different controllers mean input mappings might be weird or lacking an equivalent and the in-game representation of the controller might be wrong, but the basics work as well as you could reasonably expect.
It's pretty tough to use with the Leap Motion. However - you can run the tours via the mouse on the desktop. (Also - in another comment I mentioned you can edit the tours in a text editor so that might be enough to keep people happy.