To be clear I didn't wander into the decision unaware of what can go wrong (quite the opposite in terms of the amount of research and preparation that went into it), and I'd never encourage anyone to enter into the choice without being fully informed, medically supported and having a solid plan of "what if X, Y, Z".
Shoulder dystocia wasn't an immediate concern, and I naturally positioned in the most optimal way to allow baby to pass through my pelvis. I was also aware of both hands on and off maneuvers, and would have attended hospital if there was any indication it was happening (much the same as what would have happened had midwives been there).
Cord prolapse would have been straight to hospital, but again that would have been no different regardless who was there. My waters didn't break till 5 minutes before delivery though so it didn't cross my mind as a potential worry at the time.
I had mitigated the risk of hemorrhaging as best I could pre-labour, as well as being prepared for it moreso than midwives would have been if it did happen. I also, again, would have attended hospital if I'd had any bleeding during labour.
Baby not breathing would have required resuscitation, for which we were equipped for if it had have been necessary.
Hope that helps answer your question.