Weapons practice is an important part of the Black Belt study in Bushi No Te Isshinryu.
Not as much as for defensive use but for the secondary skills the training provides during the years of practice. Over 15 or so years the fingers, hands, arms and entire body as strengthened as the weapons study progresses. This increases application study, as if you grab an arm and move it down as if striking with a sai.
In our dojo we practice the Isshinryu weapons kata as practiced by Charles Murray. We also study version of Bando practices for staff and stick as they were shared with me. Additional studies for kama and tanto derive from Tristan Sutrisno, which are restricted to the senior practitioners.
Am example of Bo is Michael Cassidy performing Urashie No Bo
Then Michael Cassidy & Young Lee practicing
Chantan Yara No Sai
Or Young Lee performing our version of the Bando form the Hidden Stick. This version was shared with me by an instructor at the Bando Summer Camp in 1994. Their stick was considered a back up weapon for use if the primary weapon was lost. It has obvious use for self defense.
These presentations are not meant to be perfect presentations but are representative of the craft we work at.