I'm pleased you've been following along. I wish we could have met up in NOLA....meeting Nesbitt would have been awesome (esp. if there was a Confederate around!). It's hard to not find interesting things in New Orleans--we'll have to sync up next time I do this. ;)
As for the backpack--I actually have a Kriega 10L inside my backpack to keep everything dry. :)
Regarding saddlebags--they're great when you're with your bike, but my stuff is too valuable (and necessary) to leave sitting on a bike luring thieves. And lugging saddlebags is a pain, as is fitting the PVC I'd need to keep it from getting sucked into the tire. Backpack goes where I go and keeps my hands free (to carry my helmet and the 20L).
I can say first hand to anyone thinking about scoring luggage/bags that Kriega makes top notch stuff. Only one suggestion, Michael--that 20L bag would be even better if it had a dedicated handle! :)