Well, I got a copy of the book, and like JulieDoula, I found it fascinating how physiologically we are meant to be upright somehow for it to be more effective.
I also did the labour and birth class at the hospital last night, and don't think I will have a problem with the caregivers - the midwives are very pro being upright - and she explained with a pelvis how its better to be upright too. we also got to see a short video of a birth in the birthing centre, and it was definately in line with this philosphy. So fingers crossed, we can go ahead with this type of birth - i just better start doing some half squats or something to help strengthen my legs!

thanks again