If your amp is in a high gain negative feedback loop, it can be harder to see the crossover distortion because the feedback look "eliminates" most of it.  Getting rid of that feedback would make it easier to see.  Higher frequencies might show it more because there is less open-loop gain.

 

Did you ask this question because you tried a simulation and couldn't see the distortion?  Or were you just wondering whether simulations show it?  Simulations do indeed show crossover distortion because they simulate what the amplifier actually does in real life with real hardware.  The degree to which you can see it depends on many things - not only in simulation but in real hardware.

 

Andy