If you are not using mushin then you cannot 'see' anything clearly or observe anything clearly.
IMHO, seeing implies there is something to be seen and some one to see it, therefore still dualistic.
IMHO, the process is just looking and seeing no-thing with no-mind by no-one.
Perhaps we each need to find our own conceptualization which give us permission to let go of past patterns of thinking, feeling, and acting ... to habituate new patterns of thinking, feeling, and acting ... and then to let go and enjoy the view and the ride?
Ultimately, while there may be sky and clouds, there is no-mind. Mind is the illusion. But it can be a very useful one.