I rode nitto moustache bars on a fixed gear conversion I had and they were very good. I enjoyed the upright riding positions they offerred and like the "old school" aesthetic they offerred as opposed to straight bars or (gasp) bullhorns. However, on my track bikes I always use a type of bar that was designed for a track bike. I ride track drops as well as an old type of handle bar designed for track bikes and path racers which seems like a cross between moustache and drops. Perhaps you have seen these a vintage photo.