just an update on the cradle:
1) the way the usb charger plugs in to the back of the cradle, the cord provides additional fore/aft stability. in addition to the fact that it is nearly 4" wide, there is zero need to be concerned about the cradle flipping over...its actually rather stable.
2) the backrest of the cradle ensures that there is zero stress on the micro usb connector.
3) the "ultra thin" Nillkin border case is not svelte enough to fit in the cradle, even with the insert removed.
i havent charged a spare battery yet in the cradle...i will probably buy one soon enough, but in the meantime, i just leave a USB charger plugged in to the active USB port on my computer to give the phone little spurts of juice here and there to get me through full travel/work days.