That is insane. They will allow the the Swiss knives and still prohibit box cutters.
(Under the TSA decision, however, box-cutter type knives used by the 9/11 hijackers are still prohibited. Razors as well as knives with molded grips also are still banned.)
A knife with a 2.36 inch blade can do a lot of damage. You can now take a knife on board, but the last time I flew I could not take a bottle of water. Nuts.