I, too, chuckled at the "couple of hundred microamps" quote. However he refers to the high-speed clock, which is turned on only during transmit/receive, and is indeed negligible compared to the total power consumption during RF communication.
That being said, their low-frequency on-chip oscillator specs are horrendous (50ppm PER DEGREE). You can't maintain a BTLE connection or mesh node with that kind of clock, you still need a 32kHz crystal oscillator, so TI haven't "solved" the crystal oscillator problem just yet...