Originally Posted by
Bandera
An expensive proposition to own both dedicated timed event & sprint machines, although that would be nice.

Unlike the road where TT and road bikes have different DNA on the track having sprint/mass start bars/stems and the appropriate gearing as well as an aero pursuit set-up to swap out on an all 'round track bike is suitable for both types of events.
-Bandera
Expensive but maybe not all that uncommon for professional (and state-sponsored amateur) racers. At that level, in the days when steel frames were all there were, the top sprinters would have been riding Columbus SP frames while the pursuiters were on much lighter bikes, maybe even Columbus KL in some cases.
These days, it's much easier to build frames that are both ultra-light and ultra-stiff, so all-rounder bikes are probably the norm.