I posted photos of invisibleSHIELD on my MacBook Pro in this
blog entry.
Again, applying is a bit challenging, but once applied (and let it 'set'), the result is really good.
Trackpad although feels a bit different, still very easy to work on. Besides the scratching-proof, another changes is the "grip". It makes you gadgets far less slippery. If you put your gadget with invisibleSHIELD on a glass-top table, you will note that it becomes very hard to slide the gadget.