I work retail and in this heat, a messenger bag would leave me a sweaty hot mess. And my phone is my computer and keeps me linked to my wife. She freaked out during one of the first 100+ days. Getting home took me an hour and half. She was not happy with me since I wasn't communicating.
Even with all that, the ride isn't bad for me. I was just surprised by the guy's reaction. I was wondering what everyone else ride with.