Some bags are good for protecting gear, and hard to shoot from. They're like packing cases.
Other bags are easy to shoot from, and make carrying gear easy. Shooter's bags.
I want protection from weather. I don't need a lot of padding, though I have bought many well padded bags in the past. Usually they stay unused, because I can't get my camera out and working quickly enough.
Domke for me. I don't know which one would carry your laptob though...Jon will know!
Buy a Domke? Improve it with a Domke Postal Pad on the strap. It's so good, they should include it.
I have bought the Tenba Large Messenger. It'll carry a laptop easily. Better than carrying a camera in my opinion. Frankly I find it to be a great briefcase; it doesn't suit me as a camera bag unless I'm carrying a smaller camera. (Canon G series for instance.) There was very little difference in size/weight between the small Messenger and Large Messenger when I bought. Long as we're talking the same bag...
Think Tank Retro? I don't know which one would carry your laptop. So I'm not much help.
Lots of choices. Probably you have different ones in your market. And they may be priced differently than I see in Canada.
Billingham? Probably one that will carry your laptop and camera gear. My favourite bag now is my Billingham Hadley Pro. It'll carry an ipad handily, but suspect not a laptop. The larger bags get very expensive....
Best warranty I've found? LowePro. They've fixed problems instantly, and didn't require me to ship back my stuff for them. Think Tank is probably as good... Tenba warranty sucked when I needed it (because of the vendor; Vistek in Toronto.) A POTN friend finally had success with a warranty claim...with Domke. Good news, they replaced a bag