I will add that the Ogre and the Karate Monkey use different tubesets, with the Ogre's being a bit stouter due to it's role as a touring bike.
I got this from Ben at Surly because I'm in the market for an adventure bike and the only one I can test ride is a Karate Monkey and the Ogre is the one I'm interested in. Ben did say the ride of one bike is a good representation of the other but the differences do go beyond the extra braze-ons on the Ogre.
Hope this helps!