You can change it in the Trackpad System Preferences. Pretty much everyone changes it back to how it should be
I do like it inverted. Of course, I've always played video games (FPS, Skyrim, etc) with inverted controls.
I think he meant he likes the Lion way and is doing it wrong at work on his PC/older Mac.
Well, it's not just the inverted scrolling. There are other gestures that they added that are pretty sweet.
Apple just gets the experience right. I'm sure you'll roll your eyes, but whatever.