Yep, I used it - fantastic.

I used the "ahhhhh" sound and banging stress balls together and it does work.

In the end after a three day posterior labour, I did have an epidural and forceps but as Juju says if you know you've tried your best, then you can't be disappointed with your labour. I was ecstatic after mine and there is no way I would have lasted as long as I did without those techniques.