Not found that scratches have been much of an issue on my 5 year old Fairbourne screen, or static attracting dust come to think of it but maybe we don't get very low humidity here.
As with all the taller and wider screens that offer a bit more protection, the down side is vision through the screen in rain and drizzle isn't good. You need a cloth to keep it clear on the move. The benefits outweigh the drawbacks for me.
Same here (3 yrs with Fairbourne). Maybe not so dusty here in Europe even during trips in the heat of Spain. Car can be dusty inside but I use a half tonneau that may help. Biggest issue is when camping I have to wipe the condensation from the inside... not really a big deal. Biggest benefit is avoiding my face being hit by wind and (most) bugs at speed...
