Comment # 17 on bug 1172669 from Nathaniel Graham

This one:

Section "InputClass"
        Identifier "Wacom touchscreen class"
        MatchProduct "Wacom|WACOM|PTK-540WL|ISD-V4"
        MatchDevicePath "/dev/input/event*"
        MatchIsTouchscreen "true"
        Driver "libinput"
EndSection

I wonder if it would make sense to do it for "Wacom USB touchscreen class" as
well though.