I've been using this one for around five years:

The strap is set so that it falls at hip level, accquiring a blue tint after years of using it with jeans. When I bought it I was incredibly worried about it being "girly", or whatever. The first thing I was called when I showed it was "pijo" (fashion snob?). Looks like Privata was a "pijo" during the eighties, so I had no clue. The first thing I was told at work was "Cool bag, bro". The form is kinda similar to the one Indy carries in the movies (which you can get from Whatprizeglory).
I rarely leave home without it, the only things I put in my pockets are the keys and wallet. I've been considering swapping it for a messenger bag, or something similar where I can fit a DSLR camera.
PS: Notice the lapel pin? A small way of saying "I don't give a sh*t about what people think anymore".
PS2: The only backpack I use is the one for the camera, when I need to move with the complete equipment. They make me sweat a bit too much.