Re: [WHY ARE WE HERE]
A Judge's power doesn't last past their death. The type of seal's different, too; what they're talking about is a compulsion not to speak or reveal information. There's the possibility that that could be overridden by a more powerful Judge, or by King's metaphysical authority.
With mine, the memories won't exist to be accessed once the trigger activates. I won't say that it's totally foolproof; that would be a stupid claim to make. But the voluntary part of the trigger means that if you're in danger of being probed, you can preemptively make yourself safe.