Anyone using radicle for a project with external contributors?

I've tried it with some of my projects and it seems promising, but I wonder what it'd be like to use it on one of my more successful projects.

Hm, I thought Radicle does not have a way to create a private repository. E.g. your repository, code, and issues are always publicly visible.

This isn't true. You can setup private repos. Here are the docs.

https://radicle.xyz/guides/user#3-selectively-revealing-repo...