This looks super interesting, but it must still be in its infancy? Other than this paper which you kindly provided, I can find zero other references to it or any implementation anywhere?
I like the idea of communication over HTTP using JSON as opposed to the relatively noisy XML employed by INDI.
The only other hit I found to ASCOM over the network was while researching Prism a many months ago. Looks like there's some kind of client/server wrapper: http://research.lightbuckets.com/eros/?lang=EN
Shows potential but also trying to overcome an inherent gap in ASCOM's functionality (that maybe this ASCOM Web initiative will address).