His older brother most likely was a previous wielder of Shibuki. Look at the pics in show to compare comparisons.
As im sure you realised, the hair and face is covered and there are wrist bands on in the first pic while the rest of the outfit is the same. Despite this, one can also argue that it could still very well be jinpachi himself. As if you look closely under the face mask, you can make out what seems to be one eye being covered with a patch/headband. So it could be jinpachi and they just changed his outfit style later on. If thats the case, id say the previous version looked better and seemed more practical given the sword he uses.