I am really loving the speed and tethering feature of OS 3.0 (stock version). However, I missed being able to run SlingBox over 3G. I don't use it often, but I like having it. On the other hand, Apple's tethering feature is VERY nice and easy on the battery. PDANet is nice too, butit kills the battery FAST. With MMS on the way, there isn't much for me to want from JB, Should I risk loosing Apple's tethering feature by JB?