Could you elaborate on what part of the maintenance would be messy? I was under the impression that maintaining this would be quite easy because there is no physical server present anywhere in this setup.
Not OP, but I think you should be fine. It can get messy if you're using it as a backend for an application that may at some point have different versions in the field (or dev/testing/staging) so you need to support multiple versions of your APIs. It's not impossible, but it can get messy. If anybody has some good rules/frameworks to organize that kind of thing, I'd appreciate a reply.