I spent about 1.5 hours this AM getting to work due to an accident miles ahead. I would have LOVED to have had EAP taking the wheel from me in that situation.
That sort of traffic is a daily occurrence to/from for me. TACC is what I mainly use and then I just have to watch out for semi's to my left or right where it will randomly decide they're coming into my lane and hit the brakes. EAP is still a bit risky but I'll use it occasionally as well.
EAP is definitely worth adding to the car for TACC alone. It's awesome.