But if they want you to work for them than why wouldn't they give you your stuff back? If they it long enough to get a explosive collar on you and get you to agree to help them I don't see why they would keep it. If anything it would be a reason to help them.
Some things like The Pitt you get it back cause people would riot when they took their stealth armor and lincoln's repeater and got it jacked.
Doesn't sound like there's much "agreeance" here. I mean, we'll see how the story goes but if an explosive collar is stuck around your neck, what more motivation is necessary?
Captor: "Do what I say, or I'll blow your head off"
Courier: "Only if I get my weapons back when I'm done"
Captor: "... what part of 'do what I say or I'll blow your head off' didn't you understand? There's no negotiation, do it, or you will be headless!"
Courier: "But all of my weapons and armor are worth more than my head!"
Captor: "..."
CLICK... BOOM. Find a new patsy to go do his bidding.