I've seen that and think its absolutely amazing. For someone to say its gross is just...well, not really ignorant...maybe uninformed? I know quite a few women who are grossed out seeing a natural labor...seeing a mom delivering a baby upright or in squatting position. Its just something we aren't used to seeing..."grossed out" is another way of saying "weird." How many women actually orgasm during labor and don't feel it because of the epidural, do you think? Probably a lot of them. So, what part is gross, do you think? The physiological response to abrasion of the interior vagina and increased blood flow to the vaginal region and the emotional experience of birth (e.g., orgasm)?...or that the woman felt it...and enjoyed it? Either way being "gross" is absurd.
Though, everyone's entitled to their opinion, I guess. A med-free, pain-free, orgasmic natural labor isn't for everyone. 