Hi M., I gave birth "naturally" to three children (now 2,4, & 5 1/2) with Nurse midwives in a hosptial-based birth center in New York City. (I live in Hoboken) I received all the benefits of midwifery care in a midwife-only practice (all Yale grads) with the "on-call" backup of a physician in a hospital-based birthing center (only 3 rooms on a quiet floor away from the hubub of the regular birthing floor). It doesn't have to be all or nothing. You can have the best of both worlds. I found that my skeptical husband (banker-type, not initially comfortable with midwives) was completely converted by the experience. So don't give up. The nurse midwives follow all the same prenatal and labor procedures and policies as the MDs (it's the law!). It's the added emotional and social support, along with longer office visits and their presence during your labor (not just your birth) that makes all the difference in the world.
There is a time and place for the interventions you mentioned. They are there to save the life of your baby. You just need to find someone who won't simply use them as a convenience for the provider. You'll be paid a lot of lip-service on this subject -- just look at their numbers. OB-Gyns are the most highly sued specialty in medicine. You almost can't blame them for how they practice these days (yet, you can -- Business of Being Born documentary - super scary!)
By the way, doulas rule -- especially for your husband. Why should he have all that pressure on him to figure out how to comfort you? To decide when to go to the hospital? Interpret the medical lingo, if necessary? It can be sooo stressful and scary for the partner -- they are not childbirth experts. Doulas take the pressure off of him, and allow everyone to focus on you as a cooperative, supportive team. The support you might require during natural childbirth is often the obstical to convincing your partner that it's a good idea! Natural childbirth is hard work, and it will require all of you. If you can swing it, I would recommend the doula.
Take your husband to interview a midwifery practice. I guarantee he will not have a concern that they can't put him at ease over. They are highly professional, licensed, credentialed, insured women's health experts -- they will not be beating a tambourine and burning incense. Also, look at midwife.org for more information you can give him. It's the website for the national organization of nurse midwives. I spent a lot of time educating my husband, and found that using things in print from "official" sources really helped. Good luck!