F4I i suspect you do not appreciate how little actual head movement is involved.
So your sitting in front of your monitor with your nose pointing straight ahead.
Point your nose at the edge of your screen and thats all you need for movement, it also has response curves you can adjust to your liking.
Believe me its totally natural movements and you forget your doing it.
But it really does need the enhanced mode being enabled in AH because even though it will work in AH1 and AH2 currently in mouse look, i find the panning is not smooth and you have to keep centring the front view.
However in IL2 where enhanced mode is available its totally smooth and always centres correctly.
In a word awesome.