Ok, backtracking some.
I most definately have T1-11 on three faces of the house, but the rot is on the front which I see now that I am home (offshift just started today) is completely different. I am thinking it is lap siding there now that I have a good look at it again.
This is pretty close to what it looks like:
Now though, this opens up a whole new can of worms. If there are 3-4 boards that are rotten, do you have to take down the whole wall of siding? Or is there a way to get the new boards up under ones above them and do it effectively? There aren't really any verticle seams, as the runs aren't long enough that it was needed.