[@LadyRunic][@Prince of Seraphs]  Whoa, okay.  So the only ones that could use a full-iron blade would be a full-human, or one of the races of fey that are specifically able to handle true iron.  But having such a blade would make any fey in the area that is /not/ of said species feel unwell -- and iron itself is probably closely regulated.

I suppose I can see something in the forging process dampening the iron to get rid of that radiation poisoning effect.  That would explain why fey can tolerate having flecked or edged blades around.  And while edged blades would indeed be more dangerous to someone cut with them, I think flecked blades would be harder to handle in general, as the iron is throughout the metal, so touching any of the blade would mean contact with iron.

If iron-edged blades are indeed rare (and thus valuable), Duska would have given her blade to Sini, instead of the captain following her.  The captain can get his own enhanced sword.  Sini's second sword would be a normal one.