Agreed. Its also right in the Traditions sidelock manual too. Im betting its in the newer inline manuals as well.

3.Always wear proper quality eye and ear protection when loading, fir-
ing or cleaning any firearm.

Yep sure is.

ALWAYS WEAR EYE AND EAR PROTECTION THAT ARE
SPECIFIED FOR USE WITH FIREARMS
every time you handle your
firearm for loading, firing, cleaning, or maintenance. Make sure that all
bystanders where
you will be shooting are also wearing the proper eye
and ear protection.