Thanks! We'll give it a try! =D
I just noticed that if you back the above URL down to the parent dir, you'll see the rest of the files and in the README they mention that the connection is via the hand-controller, so that sure sounds architecturally similar to the Celestron way.
Not that there is any apparent/implied/obvious/known-to-be-a-fact past shared history between the companies.
Will report back on whether the Celestron GPS driver works here. Thanks again! =D