
Brother Tyler |

It doesn't matter what the check is for - defeating a bane, acquiring a boon, some other check (like closing a location) - you can add 1d10 and the Undead trait to the Str, Con, or Per check. So yes, you can add the trait to your check to acquire an item (or augment an item with Honaire for a Str, Con, or Per check).
+AFTERTHOUGHT+
Where the heck is Hawkmoon? He let a rules question go for over an hour, letting the B team take a crack at the answer.