Wrap Assassin king. Would consistently pull ludicrous damage on Scout, his pick classes would usually do big damage or get good frags. His Sniper must be the most demoralizing thing to push into and he can singlehandedly shut down pushes with a good sightline.
My only two complaints are that he (for some reason) barely ever offclassed to Engineer on last, and he did not like playing near combo on my team.
Highly recommended. He should mesh well with mid or high IM teams on flank Scout. Basically a free pass through Viaduct if you put him on Sniper. Warning though, Highlander player.