All the PIP's so far only show when there is an antenna connection or "OTA". So for now, unless you pay BIG LARGE BILLS for a video processor, PIP is what it is.
To do the PIP as we see folk ask for is going to cost.
I want a tv that I can play games on but also watch tv at the same time, mostly for sports. Or watching one channel one screen and something else on the other. I purchased a Sony Bravia yesterday because it listed PIP in the features but for that PIP you have to have a PC connected to the TV and can only be used to browse the internet while watching TV simultaneously, which is asinine.