I think L&D experience would be very helpful. We do a fair number of abortions where I work, some therapeutic, some genetic (not one of the wonderful, miracle-of-birth loving OB nurses on our floor refuses to take these cases).
A lot of the things we do every day on our unit (supporting patients and families emotionally, managing bleeding and pain, administering medications) would be applicable to working in a clinic.
As for safety, well you know they say if you don't do what you believe you have a right to do, the terrorists have won. We are careful in that we don't give out the names of the doctor(s) who do the procedures to people who just happen to call on the phone.