I used to love having a small but usable computer - a Personal Digital Assistant - with me. Personal / mobile computing for the win. I never feared someone else's PDA.
I will need to see the detail, and perhaps I have misunderstood, but the notion of interacting with people who have surreptitious listening devices, secretly transcribing conversations, is frightening.
I like being able to chat with people, and that - for me - is inconsistent with everything being potentially noteworthy.
A Bare Arms For Conversations policy?!