On lifetime xarelto for la. should i suffer a major cut or internal bleed, wouldn't i be better off on warfarin having a known reversal antidote?

Not necessarily: Xarelto has a very predictable effect and isn't effected by diet like warfarin. Studies show bleeding is less likely with the new anticoagulants because if this. You are right that there is no reversal agent yet for Xarelto. If you are engaged in activities that put you at risk for injury (not a good thing on anticoagulants) warfarin would be safer. If you are stable on warfarin it's cheaper.