I kinda meant more for the fronts. To be totally honest with you, I don't understand why anyone with the means wouldn't use a disc rear for every event that allowed it. This is just an assumption here, but I always thought sprinters don't use discs because they're not stiff enough, and they don't accelerate fast enough, whereas pursuitists don't care about that stuff, so they often use dual discs.

There's also the obvious consideration of not always having the luxury of riding on indoor tracks.