I go to a practice that has both OBs and midwives. My first delivery was assisted by a midwife. I got an epidural because I decided when I got my BFP that I was going to. With my second, I had a midwife, and she definitely helped me talk myself out of getting the epidural many times when I was so exhausted from labor that I just wanted to get it done so I could sleep. With my third, one of my OBs was in the room, and she assumed I'd want the epidural - I told her I didn't need it - and we continued on without it. Nobody ever pushed me into getting one or even mentioned it more than once, but my midwife who really helped me get through that looooooong labor without it was absolutely wonderful and necessary.
I think if you have a doula or any other support person - or a close and trusting relationship with whichever practitioner you choose, like I do - that you won't have to worry about anyone trying to force anything on you or trying to change your mind. However, some people do report that their OBs, although wonderful during the pregnancy, tried to push interventions (hence high c-section rates) or drugs to keep them quiet or move things along faster. If you know anyone else who loves their practitioner and has had natural deliveries, it might be worth it to check out their practitioners.