Well, from the picture, It appears that the inner cog is very close to the end (towards the center of the hub) of the threads. At least I am assuming this from the picture's relative dimensions, I am also assuming it is slightly wider than a standard cog.

When you look at your normal track cog, the physical "cog" portion is on the farthest outboard side. That said, it would make sense that the two cogs would be biased equally off of center, hopefully giving you a marginally good chainline with either, but not a perfect one with any.