Had a bit of a mishap this weekend which left me stranded, and I thought it would make sense not to get caught in the same position again so bought a multi-tool with chain breaker (Lezyne SV10) and some power links.
The trouble with the chain breaker on the multi-tool is that I can't get it to work on anything other than the link pin on my Shimano 105 10-speed chain. I can't see this being useful unless I carry a spare chain around!
Are other brands of chain more easily broken? If not are there any portable chain-breakers you would recommend?