With both boys I really didn't have any prelabour at all, just game on!

DS1 was 10 hours of labour, posterior with his hand up beside his head.
DS2 was 2 hours 50 minutes, born less than 20 minutes after arriving at hospital. He was also posterior when I commenced labouring but I managed to turn him early on.

Yes, DS2 was a short labour but I didn't feel that shock or out of control sensation that others have described. I'd happily have a short labour again. After DS1, I looked like and felt like I'd been run over by a truck (yes, my mother told me I looked like I'd been run over by a truck!). DS2 I recovered much more quickly - a bit shaky at first and a bit of blood loss, but felt really great.