As far as the wife handling locked weapons in your home, VERY dangerous practice because you do have access to the firearm, through your wife! I have PERSONALLY seen judges throw that excuse right out the window because in reality, we all know it is bullshit. I have seen this not work out well myself in court with a felon's girlfriend, let alone a wife. As far as people doing it and getting away with it... people get away with illegal things all the time. Heck, we are on a steroid forum! The risk is still there. Just be aware that what they are doing is still illegal, they are just not getting caught most likely.
My range here, the police have a direct link to the range and who is going there to shoot. When a felon goes there with his wife (even if she carries the locked guns), the felon then gets busted for a violation. Similar to stolen items being sold to pawn shops. There is a behind the scenes background check done that you are not aware of, until it's too late.
Stay safe all. If they want you, they will get you. Don't give them a reason to want you.