Board Thread:Theories and Speculation/@comment-3523655-20180918083440/@comment-734582-20180922214907

Raidra wrote: could it be that it's meant in the sense that the Sword of Kusanagi is focused on physical attributes and the Totsuka Blade is focused on spiritual attributes? I think so, yes. Littlegen wrote: The question i have is if the Totsuka Blade existed before Itachi, how was it that Itachi acquired it and incorporated it into his Susanoo. If Sasuke found Orochimaru's sword could he just give it to his Susanoo? Unknown. For some reason, Obito wasn't able to steal the weapons from Itachi's dead body, and he had it in the afterlife. So it seems a safe bet that there's more to the weapons than merely storing them.

As to the weapon of a Susanoo... It seems the Susanoo takes on a weapon that fits the user, so there's probably no unique reason that Sasuke's has a bow. Meaning, if he had some other weapon that could be incorporated into a jutsu then yes he could probably use a sword (or other weapon) with his Susanoo.