I wouldn't take a ski that wide to ski out west without another in the bag.
The Sheeva 11 is a solid choice, though, considering your love for the 9 and the 10 when you tried them.
Oh agreed, that would strictly be a backup if I decided to take 2 pairs. However, I usually prefer to just travel with one pair because it’s just easier to drag my single sport tube around! Have you tried the Sheeva 11?