No it isn't. Following up on your post, which is btw, great, I'd add Mission Control also breaks my use of Exposé.

On Snow Leopard, most of the time, I used only one space and, as I've been using it on a 13.3" MBP, my windows were always using most of the screen and I usually have more than one window of a given app open at the same time (Finder or Text Wrangler for example).

To see multiple app windows, my workflow was: 1. Swipe four fingers down (gesture for Exposé); 2. Select any window of any given app.

Now, I must use Mission Control: 1. Gesture for Mission Control; 2. Select the app; 3. Gesture for Exposé; 4. Select my window.

What used to take 2 steps, takes four.