Something else to think about with home birth midwifery and midwife assistant jobs that involve home birth is that, well, you're working in people's homes.
When I had my baby in a hospital, I was in the medical domain. The nurses worked there; I was on their turf. And the OB just sort of swooped in periodically. Now, that was fine with me. The nurses took care of pretty much everything, even bringing me graham crackers at two a.m. so I wouldn't be taking Percoset on an empty stomach.
But my best friend had her baby at home, and I was there for that. There, the midwife and her apprentice/assistant were on my friend's turf, and they were the ones adapting. They had to figure out where everything was (cold water? ice? crackers?). The advantage of that, of course, is that then the patient often feels so much more comfortable, but not everyone would be comfortable working in people's houses like that.