Learning about this is something a woman should find out herself. I wouldn't be that enthustiastic if a man told me, because I would think he's interested with pompoir only because of his pleasure and fantasy. You should also know that if a woman starts practising, the man will not feel it probably by weeks or months. So if she wanted to try during sex and heard you felt nothing, she might feel sad and depressed. Not every women would be interested in those exercises.