Although you'll still probably spend hours customizing your character in Skyrim VR, the virtual reality version doesn't give you many opportunities to actually see your character.
That's where the VR Mirror mod comes into play. This stop-gap mod adds a mirror feature into the game that lets you directly look at yourself to make sure you've got your character's appearance exactly the way you intended.
It might not be a big deal, but whether you're playing on the Oculus or the Vive, looking badass is half the fun of Skyrim. And if you're looking for more immersive gameplay, this is a must-have addition.