Mark, you can try it out by joining the Early Access Program. The PWS was provided for convenience only and can always be removed or replaced with a different web server. In the future IRIS will check if a local web server is present and can configure the instance during the installation to use that web server (IIS on Windows, Apache everywhere else). I am going to augment the primary post to include removal information. Hope this helps.

Enrico and I talked about this last year and he was able to verify that InterSystems addressed the issue, which will be available once we release the NoPWS adjustment.