I have a pair of Carradice Kendal panniers. Same material, same mounting system. Great bags. The mounting system is especially nice. The combination of traditional materials and the modern mounting gives Carradice an advantage over other canvas bags. Easy on, easy off.
I also got mine from Citybikes. Had to have them shipped 3000 miles, but Citybikes had the only pair in the freaking world at the time. Seriously. I called every Carradice dealer in the US and a whole bunch in Europe, and nobody had them. Beth at CityBikes saved me on that one.