the questions that i asked at the signing last night, These are paraphrased because I don't have a perfect memory. Q: Can allomancy affect shardblades? A: it would be very difficult it to affect a shardblade, maybe a duralumin burn could affect one but It would difficult Q: So are shardblades more organic than metal then? A: The blades are a product of the splinters of honor and are essentially a form of investiture, so I short answer yes but they have metallic qualities. Q: If an Elantrian was bonded a seon and traveled to Roshar would that bond act as a Nahel bond? A: The bond would act very similarly granting the bonded certain abilities but not exactly the same as the spren bond.