My perspective is from the technical side of Improbable, not the business one. However I can tell you that the “US and EU support” refers to the fact that we currently only have clusters (i.e where you run SpatialOS deployments/simulations) in data-centers located in the EU and US.
This is why you can perfectly well access the Alpha SDK and even run deployments. Nonetheless, because of the geographical locations of the data-centers, you’ll experience a quite high latency which might not be ideal for most applications that require users connecting to the deployment/simulation from outside the data-center.
By the way, I like the idea of the use of AR in healthcare applications. Looks like a really interesting use-case.