Sean Hollister got his hands and face on Valve’s new VR headset, the Steam Frame. It’s expensive, starting at more than $1,000. It’s buggy — he and CNET’s Scott Stein both felt like beta testers as they reviewed it. But it’s also full of interesting ideas, including the promise that Steam games could one day come to your mobile phone. This week on The Vergecast, Sean and Scott discuss who exactly this device is for, in a world that mostly seems to have moved on from VR.