[hippich]

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 [e-mail]?)

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.

[zrail]

Get away with? Sure. It would not be nearly as useful or as seamless as gitolite though.