Way to spoil it. For random reference, only the two largest sizes of Chrome bags (Kremlin and Metropolis, which are both incredibly massive) have a stash pocket. Unless they started adding them to smaller bags recently.

That little hook of strap at the bottom of the bag, which someone mentioned as a blinkie mount, can also be used as a U-Lock carrier. You need to unlock your lock and thread the U through the strap, then close it (which kinda sucks for messengers, I guess), lay it against the front of the bag, and close the flap, making sure to press on the velcro. Works great, except it flops down every time you open the bag. Nonetheless, if you need extra room or don't want your lock scratching up your Pabst (or whatever), it's a good solution.