As always, your postings are very informative. It looks like it might get heavy to carry if it's loaded up with stuff. Is that true? Do your arms get tired? I have back problems and I am always worried about putting too much weight on one side of my body.
See, I normally don't carry water bottles with me, and the diet coke never makes it inside the bag! Lol

The bag itself is very light, although if you do have back problems then (as much as I would hate to say this) I would discourage you from getting a Work. My arms get tired after a while and I don't normally carry that much.
Oh, and that's the other bad thing...it's a bigger bag so I'm tempted to put more things than I would normally carry...and that's where most of the excess weight is coming from.
I had a PART TIME (until recently) and that seems much lighter...it's odd because I would always carry the same amount of things (well, except for a thing or two) but the PART TIME is much lighter to carry...so maybe that's something to consider. I'm a fan of both.