Tried this function today in angle mode. As Tony said, it needed a significant yaw before a direction change was noticeable and any application of cyclic zeroed the trim/cruise.
Edited to add the d-pad is very sensitive - whilst cancelling out forward trim, I inadvertently dialled up full left hand trim.
I think I'd prefer to use a linear cable cam where possible but that means pre-flying the route or uploading it beforehand, and you're then stuck with a preset altitude but at least you know where your drone is without looking; it's easy to reverse or pause and it'll stop at either end - I'd hate to cruise into an obstacle whilst watching the screen filming a backwards shot!
Like many functions, good to know how they work in case you trigger them accidentally!
