My only concern with these types of resumes is that I've heard stuff like this can't be read by automated resume parsers used by some companies. I don't know how true that really is, does anyone know?
Most statistics show that 70% of jobs are found through personal networking, while 30% are found through career boards (like Monster.com.) We feel like we fit well with those 70%. However, even within the 30% of jobs that are found through career boards, most of those end in an email and an interview. We think a Loft Resume is a great way to stand out when job candidates do land that interview.
I would understand if they asked for one of the various specialized XML dialects out there (HR-XML, XMLResume etc), but in my (limited) experience, nobody does.