If theymos thought there was a need to change up the way things have been done, i'm sure it would have been done by now. I'll would almost guarantee that he has the home address and real name of OGNasty in case something like theft were to happen.
I doubt very much he's gonna just send 500 btc to a guy and not have some sort of information on the guy.
OG can just send the BTC to a friend and file a police report for whatever he wants.
Multisig is necessary.