I use the Timbuk2 Snoop. It's my daily bag in addition to being the only gear bag I've even thought about since it got here. I went with the Medium, and it does look huge when you get it out of the box, but there is no way I can fit all of my current gear and the things I personally require for an entire day (a complete set of supplies for my insulin pump, glucose monitors, and treatments for low blood sugars) plus the normal things I use like my iPad, phone, and wallet.
It's a bit roomy for a daily bag, but I haven't forgotten a single thing I needed since I found a bag I could use for both daily life and photography, and that happened several times before I got this bag. I also have not lost out on any shots because I didn't have my camera on me, as I've always got at least the my XSI with one lens on it in the bag. It takes no time to drop any other lens I want in the bag.
Features:
This is a messenger style bag, and if you play with the strap enough, you will find a sweet spot where the bag will sit perfectly on your back. There is a quick release buckle that will open up the strap to get yourself in and out of the bag with a modicum of grace and then buckle back up. There is also a narrow strap to add on as a waist belt for extra support. When you have the shoulder strap set properly this waist belt works unbelievably well to distribute weight over your hipbones. I think the belt might run a little short for some people, but it may be possible to address the issue some how.
I bought the cellphone case for the strap. I've yet to bother adding the bottle opener..
There are tripod loops under the bag. They work well, but your monopod or tripod will get scratched up if you don't have a case for it. I found the loops were a great place for my jacket.
The few organizer pockets in the front get used, but they aren't amazing enough to offer as a feature of the bag. Too narrow, as most other reviews I read said. I tend to stick my wallet or my SD card case on the key clip, depending on which I am more afraid to lose at the time.
Every review I read said the bag needed a hand loop. It was absolutely the first thing that drove me nuts about the bag, and is pretty much the only thing I don't like about the bag. I'm getting around the lack of decent place to put water, but I wish there was a hand loop a lot. This bag would be an 11 with the hand loop.
This may not apply here, but as a woman, this was the most comfortable camera bag with a single strap I've ever worn and is the least ridiculous looking when I wear it.