I ride my bicycle almost every day in downtown Austin (I have been a bike commuter since I first started working) and I always carry when riding (I have a CHL). I also have a Vespa scooter (200 cc which makes it a motorcycle; motorcycle license required) and I always carry when riding it too. I wonder how may bicyclists and scooter riders carry. I bet not many. In any case, thanks for the posts; I'm always interested in CHL and bicycles.
I agree with the comment about not defending against bike thievery; as my CHL instructor said: can you imagine sitting in a court room and being asked by the prosecutor " do I have this right that you killed XXX over a $700.00 bicycle?"
PS: note the NRA sticker on the seatpost
Thanks as always for all the posts,

bob