Well if he has to actually summon people and such then I wonder..would he actually have to slip the ring on or would he start with it on? If so then a dude with a gun kinda has a 50/50 chance right? Since he'd also have to actually remove the lucky rabbits foot from the box, etc. Basically the list of people who can take him goes up quite dramatically. This would seem to mean there is also every chance he'll just drop dead if he even thinks about binding death.