The excitement for virtual reality was obvious Friday at the SXSW Interactive Festival in Austin. Attendees packed the “Geek Stage” at Palmer Event Center — many sitting in the center aisle — to hear several Oculus executives opine.

When asked about the Microsoft Hololens, an augmented reality device that overlays virtual information on top of your field of vision, Luckey was skeptical.

“Nobody has ever proven a killer application for augmented reality. Most proposed [augmented reality] killer apps, it’s not that they’re not cool, they’re just kind of boring,” Luckey said. “It’s things like assisting you with how to use a tool or telling you where you’re walking or where do I go, the best restaurant nearby. We’re not excited by those things as much.”

He also acknowledged that it’s tough to predict the future, and said it’s possible that augmented reality could one day be as big or bigger than virtual reality.

“I’m a lot more excited about virtual reality largely because we know we can make good games in a good medium. We know that we can make things that you go in and you have this incredible experience with other people or on your own,” Luckey said. “That is less proven for augmented reality.”

Luckey also cautioned that the risk of users getting sick will always be part of the virtual reality experience. Even with perfected hardware, developers will push the boundaries of the experience.

“One could say no one gets sick in this [virtual reality] headset, but under a very specific set of circumstances like not allowing artificial locomotion, not allowing rotation, not allowing for spinning horizons,” Luckey said. “But developers are going to make games that don’t adhere to those rules and as long as you let developers make any kind of experience, every [virtual reality] headset will have people who are getting sick in it.”

And for those curious when the Oculus Rift will be available for sale, you’ll have to remain patient. The Oculus guys had nothing to report other than “everything is going well.” But they did confirm that its design includes two screens, not one.