It is pretty sad they never came out with the official Verizon docks.
That being said, the Play Store ones work great with some slight modifications. I've been using the car dock and the desktop dock for a while now and they are very convenient. Rarely have to plug anything into the USB jack anymore. Obviously the risk with those is if it doesn't work, you can't return because you have dremel-ed them.
Word of advice on the alarm clock thing if you have the desktop dock: keep an eye on the screen burn-in. I stopped using the clock feature on my Nexus and just let the screen turn off. I have noticed at lower brightness, shaded lines across the screen, especially with white backgrounds. The white no longer looks white. With the brightness turned up it goes away. I believe the dark background with the clock being on all night was f-ing up the screen.
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