|load_kld -e| cannot detect usb_quirk(4) at all and GENERIC kernel
always has it via |device usb|. So, the following happens:
$ kldstat -v | fgrep quirk
$ kldstat -m usb_quirk.ko
kldstat: can't find module usb_quirk.ko: No such file or directory
$ service wacom start
kldload: can't load usb_quirk: module already loaded or in kernel
/usr/local/etc/rc.d/wacom: WARNING: Unable to load kernel module usb_quirk
|kldload -n| is supported even by DragonFly, so there's no reason to
care for no longer supported FreeBSD 8.x.
