I'm uncertain as to why I'd use this over the official project offering [ https://index.docker.io/plans/ ] at roughly the same price point? [e.g. $50/month = 50]?
Secondly, for those who're starting out using dockers, a four docker plan is optimal because most folks use a combination of containers inheriting from public and private repos. So you can pay $4 per month for 4 repos using gandalf.io whereas you have to pay a minimum of $7 per month for docker.io's service.
Thirdly, this is just the beginning and we're working on a roadmap of features, some of which docker.io might not provide.
Fourth - support is important when using a service, and support can have a specific flavour when using a startup offering. try gandalf.io to understand the flavor :) !
For now, I'll stick with my git-deploy-over-ssh scheme.
It is much easier/saner for me to stick with git pull && docker build. If my SSH install isn't secure, I'm screwed anyway.
If I was seriously considering switching all of my containers to Service X, rewriting it would be trivial and just a cost of doing business.