Quote Originally Posted by OneGuy67 View Post
While that appears to make sense, it isn't written in statute as a lawful reason for ownership, nor as an affirmative defense.
The "One Armed Man" exemption is an affirmative defense under the federal "Switchblade Act" providing the blade is no longer than 3".

I'm not sure how or if that carries over to state law, but any cop or prosecutor who wants to harass a disabled person who owns a pocket sized OTF (originally patented as a safety knife) may need to consider another career.