I bought this pack for travel, and because I've had a 17" laptop and it's difficult to find bags for them.
The pack is a strong pack - with storage pockets on the side. You also have the ability to "lock" the zipper pulls since they're a cable. The aluminum carrying handle is great, however I find myself wondering if I over-fill the bag, will it pull off.
The side pockets have velcro to strap a bottle to it if you wish - however I've found myself scrambling to grab a bottle that slid out of the velcro in the airport many of times, and now just don't bother.
It's a large pack, but also is heavy. I hiked a 14er in Colorado with it, loaded with food, clothes, etc. It worked great - but by the end of the day, my shoulders thanked me for it. My girlfriend used my Oakley Bathroom sink pack, and I'll comment on that one later - but suffice to say, I was the pack horse for the trip. Sure, it's handy to have side pockets for organization - but it was heavy to lift.
Works good on a plane - fits as a carry on but you may have to stuff it under a seat pretty firm to get it out of the walk way.