Private git repositories with Gitolite and backup to S3 with JGit

Good idea, for repos that you don't mind being unencrypted.

FYI that URL is missing the last 's': https://bitbucket.org/plans

What I like with gitolite is that once it's run, you can create a new repository with custom permissions with only one commit in the "admin" repository. It is also not necessary to create users for your git users.

What I like about gitolite is that I can give push permissions to people, but deny pushing to the master branch. Of course, this can be done with mere git hooks, but gitolite makes it easy and centralizes the admin configs.

It is essentially useful to use git in a svn-like workflow.

The biggest thing that Gitolite buys me is the wild repos feature. When I want to create a new repo it takes zero effort. All I have to do is add a new remote and push and gitolite takes care of creating the repo, including setting up the the common hooks.

For larger orgs gitolite's advantage is mainly centralizing admin.

Gitolite/Gitorious are used to manage repositories and access to these with single SSH/Git login/connection. Use case OP described is not what it was created for. Instead Gitolite and Gitorous are used together with tools like Redmine to setup full fledged project managements systems where you can create repositories for projects, commit to these, update tickets based on commits, etc. For use cases like this you have to have GIT control over single connection (did you notice all github GIT urls are like git@github.com?)

What gitorious do - instead /bin/bash it puts custom shell script for SSH which manages all stuff like repo creation, authorizing users by their keys, etc.

tl;dr; For OP use case gitolite is probably overkill. He likely could get away with something like s3fs and mount any number of S3 buckets and push to these as to regular local git repo.