Sorry for the extended delay in replying to this topic, been a pretty hectic month so far.
I don't have any great news, more like neutral news. I've been in several conversations with Microsoft support that are still ongoing and it seems like there isn't any explicit documentation tied to this service. What this means is that it's a "use at your own risk" service right now that has absolutely no guarantees of uptime, availability, security, or otherwise.
While this is pretty unfortunate (I hate not having firm word one way or the other) we still plan on moving forward with using the service, but plan on implementing some warnings around its use that indicate these shortcomings in a user-friendly way. This should be enough to satisfy any security concerns that bubble up due to the implementation of this feature.