Not sure if it's needed tbh.
If you are holding the ASH in your hand, you get the bonus, regardless of which tool you are actually using. So you could use a runic hammer while still getting the bonus from the ASH. Though I believe doing this uses up charges from both the ASH and the Runic hammer you are using.
If you are holding the ASH in your hand, you get the bonus, regardless of which tool you are actually using. So you could use a runic hammer while still getting the bonus from the ASH. Though I believe doing this uses up charges from both the ASH and the Runic hammer you are using.