Some thoughts on mine:
+ Understated. No one gives a 2nd look at it. I use it as my day carry office bag. A colleague complimented the look of the bag and was surprised when I told him it's a camera bag.
+ Proven to be water resistant. Inside remained dry.
+ Built quality very good. Looks like it'll take being chucked around even though the stuff inside won't
+ No velcro = pretty much silent.
+- Stiff so it can stand without folding into itself but it also means it doesn't conform to your body when carrying it.
+- The rear compartment is very convenient but it's not wide enough to be able to fit some A4-sized paper without some shoving.
+- The bag bulges out a bit in front with my 13inch laptop in the compartment and 60D in it (vertically LCD up or horizontally LCD to the side). That being said, it's easy to take the camera in and out. You don't feel like you're struggling with the bag to take out your gear.
- The strap isn't long enough for me. I'm 175cm and I would prefer it to hang maybe 5-10cm lower. It's not removable so it can't be replaced.
- The strap pad is pretty much useless and also not removable.
- Due to the 2 reasons above, my bag feels heavy with only a 13 inch Macbook pro, Canon 60D with 16-35 f2.8 attached and a 50mm f1.2 lens.
Due to the minuses, I don't use this bag when I'm out shooting. In fact, during trips when I need to lug the laptop, I use this bag to carry my camera and laptop for the plane trip only. When I want to go out shooting, I'll use another bag I carry in my checked in luggage.