He'd have to know it's a Bitcoin wallet first, then he'd have to know it's yours. With a vault, he could just point his gun at you and demand you get your peop

He'd have to know it's a Bitcoin wallet first, then he'd have to know it's yours. With a vault, he could just point his gun at you and demand you get your people on the line to withdraw it and give it to him. Your comment has me doing a threat model in my head, and you're right it's not perfect, but I still can't imagine a better scheme. Essentially, if an adversary can break through your personal security and is capable and willing to threaten your life, then you have much bigger problems than losing your stash.