Installing the extension is certainly possible, the only question is how to serve the back-end requests. Wikimedia has the Kartotherian nodejs server running, and this is responsible for serving map thumbnails, tiles, and geoshapes. As long as the Wikispore project stays under the umbrella of Wikimedia projects, I think there should be no problem in using the shared Kartotherian service. few third-parties have also been granted an exception and are able to rely on the server, but this is something the Wikimedia Foundation has been trying to phase out.