Great Build! I compliment your DIY innovation! These are probably the neatest damn things I've seen a DIYer create in waterproof panniers. How easy are they to remove? From the pictures it looks like a fairly simple task to unhook and take them with you, unless that inner-tube/rubber-band fastener is a beast. You should find a way to market this item, because the concept is worth way more than $40!

/Did I mention Nice Job?
//Who out there is going to man up and attach Ammo Boxes? I promise I'll gush just as much...
///Umm, that didn't come out right...

**edit**
Holy crap this is an old thread...