I need help understanding this. Why would somebody choose one style versus the other?
I'm toying with the idea of buying one. I bought a Brain Bag in March and really like it. But the main reason I bought it was that it made life easier schlepping my stuff from my car up to my office then back to my car. I'd have to park, nagivate a little grassy hill, then go up a few flights of stairs. The backpack is much more comfortable for this than something slung across one shoulder.
But we're moving our clinic to a new location in a week and getting from car into the office couldn't be much easier. Park about 30 yards away, walk into the building and our front door is right inside the lobby. No stairs, almost no walking. I'll still use the Brain Bag for things like airport travel, etc..., but as an EDC, I think I might prefer the horizontal organization of a briefcase or messenger bag compared to the vertical orientation of a backpack.
I was strongly thinking of the Empire Builder, but I watched dufus' video review and the things that bug him about the bag would more than likely bug me, too. The bag I get needs to be a pleasure for me to engage in on a daily basis, I don't want things that bother me every time I interact with the bag. And on the Empire Builder, having to move the strap out of the way, having the bag's material in the way of the velcro closure of the brain cell, that stuff would drive me nuts. But I don't want anything smaller than the EB. I"ve got a 15" macbook pro and I tend to carry a bunch of stuff. Might just stay with the Brain Bag, but I want to look at my options. I guess the Super Ego is one, but again, not sure about what differentiates a messenger bag from a briefcase.