I agree it is tough. Coming from java land it always seems like one is either mixing java in the html or html in java. I have also never been totally convinced about the separate people argument. Not that it won't work, but that company's that I am familiar with don't hire both people very often the developers build both the UI and the business logic, which of course further complicates the issue, because the developers are always taking shortcuts. Everything I have ever worked on is mixed up to some extent, and it works, and we manage to maintain it. Still the arguments in the paper are compelling.

It is possible to use ajax and Javascript without getting things to mixed up, but again the discipline by the developers I am involved with is sadly lacking. There is another article I will try and find to post. Humble Dialog that fits with this paradigm.