I got a pair of these
http://www.carolinaleatherworks.com/16x135sad.html for the Piglet. When the OL got her new bike with bags, I got a set of Easy Brackets and put these on the Triumph. Carolina Leatherworks are having a big sale now with a lot of their bags selling for under $100. One of the nice features is the zippered inner cover and an extra flap with a zippered compartment so there are 3 layers of leather blocking the opening.