If there really is a danger with terrain the emergency turn procedures normally cater for it. ie eng failure before 5 DME turn right hdg xxx, engine failure after 5D and before 12 DME turn left hdg xxx engine failure after 12 DME continue SID. I find time and time again that the people who try to complicate things and dissect minutiae are the same people who screw up the basics when things go wrong. Keep it simple.