no, we have never had a woman present for prenatal care, then have a birth with a HB midwife. The only homebirth midwives in the area at this point have pretty consistent back up...at least, there are a couple family practitioners in the area that are friendly to out-of-hospital birth (and as a result, have had many many people referred to them for prenatal as well as routine medical care...).
It hasn't happened very often, I think only a couple of times in the last couple of decades...and the last time it happened, the woman presented at our clinic at 41+ weeks; her boyfriends mom "had been at a few births before" and was "helping her out" during the pregnancy. But, when she went so overdue, the bf's mom got nervous and wanted her checked out. We did a routine prenatal, an NST, talked about potential outcomes, and scheduled her for a prenatal appointment the next week. She didn't show that next week, so we called and she said she had had her baby a couple of days before...11 pounds, 3 ounces at the pediatrician two days after birth! No tear. Sticky shoulders that she said her bf's mother had her go on her hands and knees and the baby slid right out. We saw her for her 2 week check, and they were both perfect and she was very happy with her birth experience.
She told me her bf's mom's name, and it wasn't a name I recognized....I know the names, at least, of all the lay midwives in the area. We asked her a couple of times if her bf's mom was a midwife, and every time she said no. She probably wasn't, then, but she knew enough to handle sticky shoulders, which was good.
I must say I was disappointed, though, for two reasons. First of all, she seemed like a neat gal, and I would have loved to have attended her birth. Also, I would have LOVED to see an 11+ pound babe born (first time mom, did I mention that? She was around 5'9", not overweight in the least, healthy diet and lifestyle...). I guess it is not about me, though, and I'm glad she was happy with her experience.
Our charges, by the way, are broken down based on what sort of client you are...occasionally we only provide prenatal care, or if you transport, fees will be prorated. When both our midwives lived near, we used to attend some home births, but you were charged the same as if you had a birth at our center; that is, you were still charged a facility fee, because we had to double staff, basically, if we had a home birth and a birth center birth at the same time. But we aren't staffed well enough now to be able to provide those services at this time. Hopefully in the future, though.
To the topic to tell your OB or not...I still think that under most circumstances it is a good idea to tell them; at the very least, I think you should seek some care...if only for the very reason stated, that if there is a transport, you already have established care and records. If there is any legal issues, at least you have proof that you sought out care and were healthy and proactive in your pregnancy.
Hopefully, if you are birthing with a homebirth midwife, she will be able to recommend docs to you. If not, well, i guess that is always your choice to seek "medical" care or not, and if you do, to tell them or not. I would feel out what your hb midwife thinks, and maybe go from there. If you are UCing, welll, no good advice here! I guess I'd try to find other UCers in the area and ask them!