If the installation is good, and it would be top notch if done at their HQ, this stuff is all but invisible.
You can see the edges if you look closely, but a very fine line of an edge of film is far better than a smattering of stone chips over the front end.
Val (TheMinel) has had a full front end installation (the whole bonnet rather than just the front half) and due to the nature of the lines on the front of the Z, the film joins in the bottom of the creases in the bonnet - making the joins even less obvious.
Ive not seen it in the flesh yet, but knowing how particular Val is about his car, if he says its a good job, its good!
I wish mine had been done from new, but I bought the car 5 months old, and too late - along with a bodykit, the tidying up of the stonechips and aplication of paintshield is on my list of things to do.