Depends really. If you're using TrackIR, not natively no. But I assume there must be something out there to create a virtual joystick from TrackIR.
If using ED tracker, that's already treated as a joystick so it should be feasible as you can control the camera suite using analog axes.
Either way you'd need some heavy deadzone and it wouldn't work the same way headlook works in the cockpit.