I realize that my experience isn't in OB GYN but I'll give my 2 cents as a nurse in with the varied adult population. I'm sure it's slightly different in mother/baby and all of course.
As much as I think the idea of bedside report is good because it can include the patient, which is "patient centered" the focus of it is usually "customer service." Besides, no patient wants to hear "Make sure you get Mrs. Whiny her pain pills right on time or she'll be riding the call light like it's a rodeo bull, or "Mr. Nasty will try to grab and grope you, so watch out, or He refused his bath all day and stinks like the underside of a rotting cow in the sun." Honestly, sometimes nurses need to know things that perhaps are not appropriate to say in front of the patient. And then there's the always present issues with the doctor you need to address but that you don't necessarily want to spend 40 minutes explaining to the patient at that time. And some patients, you go in the room to do report, you're not leaving for 2 more hours 'cause they are constantly begging for attention, unnecessary care (no, your dressing does not in fact need to be changed every 2 hours, it's not saturated and that's not the order I have... ) or wanting something from you, and take up all your time. I'd rather do report and get outta there.
I hope this doesn't come off as "anti-patient" cause they do deserve to be involved in their own care, however, bedside report is more about customer service than patient care in my eyes. A good nurse will talk to the patient anyways, explain things anyways, and provide decent care, without the added time-suck that this can be, and actually give better care. On top of that how many places have all private rooms? Can you say HIPAA violation?