They should post some demos to really show how it could run on our PC !!!!!!!!
Not only words !

Some points :
-how are applied textures precisely ?
-can you have shaders on top of this technology ? lot more power needed tnhan simpel polygons
-how can work 3D Collision system ?????
- Can you have animated models : i doubt a lot !!!!!!!!!
- Can you have Lightmaps ?
AND
- What tools modelers can produce models for such scenes ?
what tool to use to build a scenes, texture it, have lightmaps ???????

The day they will make a real demo game for all people with characters , lightmaps, shaders, particles, collisions :
OK that day we'll tale a look more serious at it

I think John Carmak have also said , he believes that some sort of voxel system could be the next technology !
But again what tools will support it , how will work texturing ? etc ... etc ...

Let's wait for a demo if it happens one day !