The current law contains no exception for a dealer. Possession of a switchblade knife, or a gravity knife, by anyone but "a peace officer or member of the armed forces of the United States or Colorado National Guard acting in the lawful discharge of his duties[,]" is illegal and is a crime under Colorado law. Your possession of these knives, for sale to persons allowed to possess them, is just as unlawful as anyone else's possession. A former CBI director, who decided she was also the Colorado Attorney General, spent her spare time writing to Benchmade, and other switchblade knife makers, telling them they could not legally sell to "dealers" in Colorado. As a result Benchmade cut at least some dealers off. That was some time ago and that CBI employee is now gone.
A visitor to a gun show in Colorado, as well as to many/most Front Range gun shops, would find the law is being ignored. But that doesn't change what it covers and what it does not cover.