Basically, my argument is, that wizards need to have their wand in case of emergency and rendering everyone in a game defenseless would be like inviting trouble into the front seat
so although propositions have been made for a rule like that - I find it reasonable to argue that there would have been some - they always have been overruled by this argument
but as they are still only in the discussion phase, he didn't mention it. In case they decide against it. IMO It's better to introduce these things when they are fixed, instead when it's a distinct possibility