srw
It's a bit more complicated than that...
Quick-links weigh just about nothing, so I've carried one every time I've been out for the last many, many years. It was pressed into service yesterday when my (brand-new) chain burst open. My minitool (http://www.topeak.com/products/Mini-Tools/mini20pro_black) also has a chaintool, and is absolutely tiny, so 30 minutes fettling in the sun half of which were spent opening a quicklink and rethreading the chain through the front derailleur rather than underneath it saved a taxi ride home.
If you have a friend with you to help steady the pedals, whipping off a single link of a chain, rethreading the chain and fixing with a quicklink is a matter of a few minutes' job.
If you have a friend with you to help steady the pedals, whipping off a single link of a chain, rethreading the chain and fixing with a quicklink is a matter of a few minutes' job.