It's deployed in some places and working already. Citing from the webpage:
> SCION is the first clean-slate Internet architecture designed to provide route control, failure isolation, and explicit trust information for end-to-end communications.
Also it will reduce latency, increase throughput and more, as mentioned in the papers.
The project has really been getting traction in recent years, it may just become our new internet base layer.
Currently the people at ETHZ are working on verifying router hardware mathematically to guarantee SCION's properties.