Join Date: Oct 2007
Bikes: '07 Giant Talon, '08 Bike Friday Pocket Rocket 16
I've used the Bike Friday bag for my Pocket Rocket on a couple of trips. It's flown in the bag, and got a slightly bent chainring in the process. My most recent trip involved a lot of bus and train rides with it in the bag. Although it's handy to be able to roll up the bag and throw it in a pannier, it's far from ideal when you've got to carry the whole thing any distance in the bag. The tabs on the rear triangle do their best to tear a hole, as does the large chainring and fork tabs. If you don't secure everything together, it all bangs together when being moved, it will not stand up or lean against a wall nicely, and you can pretty easily whack other people's kneecaps in crowded areas. The stem especially takes a beating if not wrapped or secured. I was wishing I had a Brompton or Tikit for that trip.
You can also cut a protective taco out of a regular bike box to line the bag with. This gives a little more protection and helps with the holepoking. I usually leave the padding and packing bags in the suitcase, but would definitely recommend bringing the stem bag and a few other small pieces to take better care of things.