But how does it look like in practice?
Sure, that part is no comparison to more expensive devices, but if you do not too much emphasis on it has (7D & microphone is not a problem) then it is much better than from the hand, so an improvement!
Monitor etc I would not grab it, but everything if one is careful in all, a good rig.
IMPORTANT NOTE!
I have interposed at each joint between helical vanes and frame a thin washer rubber (pinch sealing ring), without which the rig would be almost useless.
The fact that you have to tune it a star deduction, otherwise top (of course with regard to the price !!!)