Precursa has the same geometry as my Paddy Wagon. You can also buy the same frame to ride on the road with eyelets and brake drillings as the FXE. It is a good beginners track bike with neutral (for track) handling, which is why Newport hire them. I like mine but the Seta is a kilo lighter, stiffer and generally nicer, so it’s been passed onto Teen 1. Most proper fixed wheel bikes will have the necessary raised BB, but things like brake bosses have to be taped over (I’ve ridden my Paddy Wagon at Herne Hill). Flip flop (i.e., double sided threaded) hubs are generally frowned upon too. A second sprocket is a no-no on the boards.
My steel Poyner is 74 degrees and riding it on the road is nerve-racking! It’s a dream on the track in a flexy 531 kind of way.