As everyone says, polycarbonate is very prone to scratching. Even scratch resistant PC will scratch, and it is very expensive. It would probably be about the same cost to have the fogged windows repaired as to replace the glass with PC, and the PC would not provide much insulation value. The cost to repair a dual pane window (except large passenger side windows) is $225 each at Suncoast Designers in Hudson FL.
2015 DRV Tradition 375KPS
2015 Chevy Duramax 3500HD LTZ Dually
Full-timers...Home is where we park it.
Check out our blog: Living Our Dream