The lack of certain weapon types can provide interesting plots as well. Hire a smith, make your own weapon, travel to distant places with a group to acquire the weapon etc.
It also most likely mirrors into your character somehow, he blames his lack of skills because of the poor weapon. Or perhaps he simply teaches the local smiths to make these katanas or dwarven waraxes.
Nonetheless, I do agree that some of the hidden shops on the island could have katanas. If they do not already. I at least have been unable to find any other than the manchakans.
It also most likely mirrors into your character somehow, he blames his lack of skills because of the poor weapon. Or perhaps he simply teaches the local smiths to make these katanas or dwarven waraxes.
Nonetheless, I do agree that some of the hidden shops on the island could have katanas. If they do not already. I at least have been unable to find any other than the manchakans.