I've gone to the observation decks of many of the world's tallest buildings. This was one of them.
The views of KL are great. The price is reasonable. the tour is reasonably efficient. The skybridge is unique. When we got to the skybridge, the tour guide mentioned that it wasn't fully attached to the buildings. There is actually a gap between the bridge and the buildings, to allow for movement / temperature expansion. Well, that was all I needed to hear to convince me not to venture far out on the bridge.
There were some drawbacks that surprised me. The windows are dirty. People recommend you go at dusk to see the sunset. I went at 7pm and as the sun set, the lights came on, screwing up the lighting for your pictures and causing funky reflections from the windows.
There isn't much more to do once you are done looking out and taking pictures. When you go up, you are part of a group. They give you a block of time (20 minutes?) at each part, which was more than I needed. I ended up doing a lot of sitting and waiting to be let in to the elevator to move on. I also was dazed from jet lag, so maybe I was just too tired to thoroughly enjoy it?
Still, the views are pretty awesome and I would go back again when in KL next.