Voxel Quest now has a first person camera, click here to see it in action. This was built in one week while running my Kickstarter campaign, so it is very rough still and buggy, but a good proof of concept. By the way, there is only about one day left for the KS campaign!
Also, I'm giving away 1000 game keys on Twitter, still many left:Twitter.com
The first person camera renders the voxels to a 2D render target, then passes the results to the CPU to generate a mesh, then renders those polygons to the screen. Still lots of room for performance improvements.