IANAL but my guess, the law prohibits a felon from possesing and law enforcement have shown they will prosecute those who create the ability for a felon to possess. But by carrying a firearm on ones person you have it available to you, not someone else, it is in your control. Much like having a locked gun safe that the felon can not get into (have a family member that this is what a prosecutor instructed to do), he does not posses because he does not have access. Now if they were to go riding in a car where the CCW permit holder had his gun in an unlocked glove box, they both would be considered in possesion so...