I think it puts to much pressure down south, if you know what I mean! Nice and slow that's the ways to go!
Actually, at my 4th delivery 6 months ago, I was in the huge tub (the only way to go in my mind, talk about wayyyyyy less pain) and was just having the longest labor ever!
I was getting very tired (had been working to many long hours in my garden) so I asked my midwives if there was anything we could do besides walking around (not working).
One said break the water the other said NO (she was the control freak), they left the room for a few minutes, so I told my husband I wanted to get to the birthing stool (like I said, painful amount of pressure) I was able to stand sitting on it for long enough to break my water, by pinching it between my nails.
The baby was born in the next 5min. (in the tub) and my midwife said, see I told you, you just needed to wait, it would happen, I smiled!!!!
I did later tell the non-control freak midwife the true story, and she agreed it was the best thing to do, of course SHE BELIEVES IN NATURE!!!!!!!!!!!!!!!!!! and the mothers instinct.
Many blessings on your future pregnancy peacelovinggirl!
P.S. hope you don't mind my little story!