Did my first official commute on my new Swift today. I was able to find a large pannier which fits my small briefcase inside, with room for lunch and all the other stuff. It also converts to a backpack. I have about an inch or two of clearance over the rear fender with the crossrack mounted near the top of the seatpost (I'm 5' 10"). I have it extending about an inch over the top of the seat, but it doesn't seem to cause me any problems. The pack is a "Voyager Commuter Lite", and in the fine print it says it was imported by Cycles Lambert Inc. (www.cycleslambert.com). It comes with a removable waterproof vinyl inside liner and rain cover and padded laptop case. Cost $90 Cdn. If anybody wants to see the setup I can post some pics next week.
Bill