Originally Posted by
photogravity
+1 A guy at the LBS suggested it to me about 3 years back and I love it. That's not to say that I don't like to have a frame pump on a bike that has pegs and a nice pump available, but not all my bikes have pegs so I use CO2 in its place.
I carry around CO2, but I have never used it. I usually just ask another cyclist if I can borrow their pump. I have a frame pump on 2 of my bikes and my girlfriend has a pump mounted via cage bosses.
Those cartridges, IMO, are pretty wasteful. I bought mine when I was a budding cyclist thinking that "less = better", but now realize how silly that is in the scheme of things.