Oops yes, I meant the USB port will wear less now I'm using the stand to charge my N7.
having used the dock for a day I really like it. It's much easier to just drop the N7 onto the dock than fiddle with the charging cable. I'd say it's the next best thing to a wireless charger.
When you put the N7 on the dock it does into daydream, and I amused myself playing around with the various settings for this (in Settings, Display). However I've now disabled daydream since I plan to leave the N7 on the charger when I'm not using it and I dont want the screen on 24 x 7.
@magohn: my dock charges the tablet via the pogo pins, so unless we're talking about different docks you should be fine.