Sedryn gets no direct answer to his questions. Prozen ignores them and is gone before he can be pressed on those issues.
His brusque manner suggests that your welfare is not his highest priority; in fact, you get the distinct feeling that his "spies" will hardly be your allies and are more likely going to be his way to make sure you keep your end of the "bargain."
On a good note, however, as you orient yourself to the galley, you discover that Sedryn's and Lithandrill's warhorses are indeed in the hold, looking uncomfortable along with the other livestock being carried across the Sea of Fallen Stars.