Origamist
Legendary Member
I do like the look of those carradice saddle bags but I think I would need something around the 12L size as that is what my single pannier bag holds. I have looked at the bags that size and think they look a bit large to be hanging off the back of the saddle.
The pendle, nelson and SQR tour are all around that size and you might get a bit of sway when out of the saddle and fully loaded, but it has little effect on the handling of the bike. If you're worried by the aesthetics of a med sized saddlebag, stick to your pannier!