Except his 2nd rights were revoked as a result of his felony conviction. Too bad, so sad....
Knives do not fall under the 2nd amendment, correct?
Irrelevant to the law at issue. The law under which he was arrested does not state that felons may not carry a switchblade or assisted-opening knife. It states that no person may carry such a knife. His status as a felon did not play into his arrest, and it does not play into the unconstitutionality of the law.