I'm 'I luv Tokidoki's' mom. While I love Lesportsac bags (i carry them all the time and have tons of extras), i think the backpacks are a bit 'lightweight'--in that, unlike jansport or other more heavy duty backpacks, the materials are just not made for carrying a heavy load day in, day out. i also think the straps are not padded all that much, which would make a heavy load seem that much heavier.
I suspect that the Drew is similar in size to the Tokidoki scuola, and i read on the laptop thread that it doesn't hold all that much. i think these bags are more fashionable than functional--cute but not really for heavy use.
i like the idea of a messenger style bag a bit better. i guess we'll just get a cute lesportsac bag and carry it with the backpack. I think we'll wait until the newer spring prints come out and then see what is available.
thanks for all the opinions and suggestions!