I have heard from a few places (cant remember specific threads) that they are inferior to good ol' Formula track hubs. I have no personal experience with them however. I don't recall what aspect of them is inferior. If its the bearings, a simple upgrade to Phil Wood 6000 series bearings for less than $20 would be effective and awesome. If its the threads or flanges, I would steer clear as those parts obviously aren't replaceable. They do look cool though.

I'm interested as well. Anyone else have experience with them?

*edit* looked at some large pics of the hubs and it looks like the threads may be a bit shallow. Could just be the pic though.