QDM x 3,
No difference. Don't forget that in a helicopter the cyclic controls the attitude and airspeed, and the collective controls height. So to climb, you don't point the nose upwards; you raise the collective. So if the engine fails, you still flare and lower the collective.
The only time it could be a real problem is if the engine fails after takeoff, when you really, really don't have a lot of time. But this applies to any aircraft, doesn't it?
Have I understood your question - and what you're thinking - correctly, QDM? I wasn't sure.