[rustychisel]

TBH, I doubt that it does, since it's been a very long time since I serviced a bike with an eccentric BB.

So here's a few unscientific thoughts. ENO hubs seem a more 'elegant' solution, perhaps, with more range of adjustment, and allows you to use the very common UN-55 and UN-72 bottom brackets (your flavour may vary), and since we're discussing a fixed gear it may be that you don't much care for a rear brake. That, as I see it, may be the only real shortcoming to an ENO hub, since the adjustment if done sloppily might alter the brake track enough such it becomes an issue.