Yep!
I carry a multi-tool with a dinky (but effective) chain breaker, plus a couple of old quick links.

Twice, I have saved the bacon for riders with busted chains. Once on a group ride where we were miles from nowhere, and out of cellphone range.
The second time was in the early miles of a century ride thru NYC.

The key is to use a quick-link after removing bad links with the tool. I would not want to attempt "re-pinning" a chain on the road, in the dark, while raining!