Hi Mbear - I hope it isnt me who has you worried (LOL!!).
For me I am not using any of them to bring on labour, more to prepare body for what is ahead and get in optimal 'shape' for labour and recovery. I have specifically asked my acupuncturist not to induce me but to work on relaxing me and preparing my body for labour and healing. It is kind of the same reason why I still make an extra effort to exercise daily, to keep my body in top shape for what is ahead of it. I personally dont want my baby to come til s/he is ready (but I must admit I'd like him/her to be ready soonish!!!) but I do want to do all I can to help my body to relax into the process that nature intends.
I think it comes down to each of us individually doing what is best for us. You have been through this before so you perhaps know your body can cope well. For me it is my first time and one of my fears is recovery etc, so this is why I am hedging bets and trying lots of things to prepare physically... Dont feel uninformed, I think you are just more confident in your ability and your body perhaps that I am.