If I'm on call for births its possible I may need to reschedule our shoot for a birth. This is the nature and I've learned to work with it. I will give you as much heads up as possible if I think we may need to reschedule. I am also not on call 365 days a year. I take time out for myself in big chunks, often a month or two, and I also use backup for a weekend here and there. When we schedule your shoot I will let you know if its a day I will be on call or not. Usually things just work out. In three years I've only had to reschedule one photo shoot.
Everyone varies in what they would like documented at their birth. Most people are really surprised by how meaningful labor images are to them after the birth. You may think you don't want to see the labor process or the delivery but in the end people are usually happy to have them. Its up to you whether you delete or save them. Of course if you don't want any of this I will completely respect that. Some of my clients only want some images of them as a new family after they feel a bit put together. We will talk about all of this ahead of time and of course on the day you can totally change your mind.