Colorado's permit is "concealed handgun" only. One of the local gun shops has a small display case with knives that are only available to LEO, according to the sign on the case.
If I remember correctly, a "knife" is defined by CO law to have a blade of 3.5" or more. Further, a knife is a weapon and can't be carried concealed. So you can wear your hunting knife on your belt, but don't put it in your boot.