Installed Lion today. First off fullscreen is poorly done IMO. It kills productivity for me. I don't want it take another 1-2 seconds to bring the dock in to view. It should fullscreen but still have the dock viewable.
I quite like the full scene apps. I either use the pinch gesture on the trackpad to bring up launcher or tap the mission control button to bring up the dock. Furthermore swiping through full screen apps is quick and efficient. I really like using the full screen apps, most likely because I'm using a 13" MBP, If I were using a 27" iMac I might not use them as often.