Lol, reminds me of when I took an SLR on The Boss - brilliant ideas!
Likewise have minimal cargo-carrying need; really just wallet and cellphone, as keys are on a carabineer. Whenever the camera makes an appearance (which, let's be honest, amazing photography-ability on the modern day iPhone) - it's travelling in a single camera bag sling.
But if the point is something to maximize both on-body storage and comfortable apparel - there's some good options out there.