As ECB4 said, regarding the horn going off, in moderate conditions you'd have to be either overloaded or ham fisted. But if you're hot and high then it's a different story.
One weak point as far as operations in rocky and uneven terrain is the spring steel rear skid extenders. These are not as robust as on the 350 and yet the helicopter is heavier. You can't see what they are landing on. They will end up bent. They don't like being straightened often. They will break off in time.