"If we do it now though we are going to lose bits between each other." Taking the idea of lost keys to a jacked level.

At the very least though he does need to be able to block Istredd. He'd still say it's for Istredd's safety, regardless what may actually be true--he hardly knows his own motives much of the time.

"I will." Hold him accountable. "I promise." It's extremely rare that he's willing to ever make any kind of promise, and Istredd would be well aware of that by now.