I read the earlier thread with interest, then recalled another thread where a statement was made about the SawStop unit. Someone believed that eventually the insurance companies might force manufacturers to fit Sawstop to their machines.
After reading the splitter thread, the sawstop/insurer idea just doesn't seem to have a hope.
As a few of you know, I recently received my saw from TW. The riving knife raises and lowers with the blade, the knife remains below the blade until more than 2" of blade is exposed, if I need to cut 4" in one go I can adjust it with an allen key to slide back. Other than that, it stays well out the way and I can't think of a good reason to remove it. I can even dado with it attached (up to a 2" anyway).
The engineering is very simple and the knife is replaceable with various thickness blades. I think you guys may be getting short changed on some (seemingly simple) safety features, but I am not sure why. Anyone interested in detailed photos let me know and I'll try to get some over the weekend for you.