Man, you're a prolific producer of picking products!
(I couldn't resist.)
One thing I'm wondering... It looks as if your picks are made by bending, rather than grinding -- so your effective 'hook' radius is quite large, meaning you need quite a bit of maneuvering space in the keyway. Have you had any trouble using those picks with paracentric keyways (ones where the wards cross the center line a lot; making it difficult to move a pick)?