Not really. Whilst soldier comfort isn’t a priority, getting your soldiers sick is never a good sign.
An example I can think of is the MBT-70 program which had the driver also in the turret instead of the hull in order to achieve a thinner hull and thus lower profile. This required the driver’s compartment to rotate inside the rotating turret in order to always point forward.
This resulted in drivers experiencing motion sickness and the project was dropped (not saying this was the sole reason just an observation).