I have a Parabellum Scout fairing and I am very fond of it. It comes off pretty easily, but leaves four aluminum straps. Removing these is not too much trouble.
The thing is, most of us with Parabellum Scouts leave them on all the time and the look kind of grows on you. With the tall screen, I -- 6' tall -- hear some wind noise but suffer no buffeting. My wife also has some wind noise, but no buffeting. We traded bikes with one of my sons last summer for a while -- he has a Tiger 800XC -- and Nina was very happy to get back behind the Scout.
45 states, 1 Canadian province, 55,000 on the 2010 T100 and 25,000 of those with the Parabellum Scout. It really turns the Bonnie into a first class touring machine.