Their are many options to a fixed gear bike. If you're going with the conversion. This option entitled the conversion of a geared bike to fixed. You could also go with a track bike (pista, keirin) which is meant to be ridin on a velodrome and not on the road becuse they use no brake. Then there is the newest addition of bikes which have been sold as fixed gear. Fixed gear have none of the disadvanteges of a track bike because they have more of a relaxed road bike geometry but have a high bottom bracket like track bike for crank clearence. Also, all bikes and frames sold as fixed gear will have brake holes unlike most track bikes. I think that the Bianchi pista has brake holes if you like that.