I have this dock and I really love it. Sadly with the iPhone 5 it does not slide out as easily as the 30 pin does. But it's heavy and I wont knock it over when I wake up in the morning.
Also as you can see by the youtube video the phone kind of tilts at a slight angle when viewed from above. This happens if the phone does not hit the pads evenly on the back.
The pads are reversible if you have a case on or not. You pull it out and flip it over. I use the elago slim case, and the pad dosent come out far enough (on the non-case side of the pad). I stuffed some electrical tape in the slot behind the pad to fill it more, so my phone hits evenly on the pad and rests even.
I know you would think with the price that you pay for this dock it would be prefect yada yada yada. It's pricey but it's fine with a little tweek and it's good to support a kickstarter.
This also works on most cases, but I've only tried it with the elago slim and the speck grip.