So I just successfully tethered my Xoom to my DX using Bluetooth. It required no rooting and was brainlessly simple (which is good for me ). Works great and browser speed on the Xoom is faster than on the DX. So here's my question: if this works so well, is there a really good reason to keep the 3G/4G Xoom? What features (other than 4G) would I lose by relying on the DX tether to a WiFi-only Xoom? My DX is always handy, so I don't see an inconvenience factor.