You are correct, 10% is “double digits”.
Wouldn’t want to short the 2nd tier.
I would hope not!
...Considering that Ron Paul & Mitt Romney are the only 1st tier candidates in Iowa, averaging over 20%, with the second tier bunched at 7.7%-14.7%, and Huntsman bringing up the rear, right where he wants it.
(IMO the Insider Advantage poll is an outlier, but I don't like to cherrypick.)