Are Szeth's goals pointless?

[Moash]

Szeth is headed to Shinovar to exact justice upon the people who named him truthless. If I am correct, the Everstorm is less than a day away from Shinovar? What will Szeth and Nalan do if their plans for the week get cancelled by a storm?

[natc]

I doubt anything on the level of an Everstorm can stop those two.

With seven honorblades present, their targets are also likely fine.