And oddly enough, I wrote an article about that too. :) Maybe this will help:
http://thehipperelement.com/post/47950319899/do-you-have-the...
As someone who values making scientific decisions, I would challenge you to survey people in the tech industry (programmers, visual designers, UX experts, etc) and ask them if they know what an "Experience Architect" does.
It is difficult enough that some people don't know that user interaction and user experience are jobs different from a graphic designer and front end developer. But I think user interaction and UX are at least somewhat known. As you said: "If you do information and interaction and UX, go with “UX” as a job title."
It sounds like "UX Designer and Information Architect" might be accurate in your case? And it sounds almost as impressive as "Experience Architect" :)