Without HTC Vive can it be Possible to view VR Preview

Hello Dev’s,

As i am new to Unreal engine and i have been working from a couple of week with unreal and Leapmotion, i have ordered HTC vive but its take some time to be shipped. In my unreal engine my VR Preview is disable i.e in grey color. Is there any other option that we preview and control with the help leapmotion.