[BRX]

Mike, I can't say more than in the post above. 

But since I refrained from using head turns it doesn't matter to me any more. No need to pursue it if nobody else has a problem with it.

After some experimenting I settled on head up for paging forward and open mouth for backward and nothing else. 
These turn the pages quite reliable for me now with the least amunt of accidental page turning by unintended head moves or facial expressions.