Well, Keith, a lone man on a Jihad is going to be a bit lonely. I think that the very act of putting the question indicates that an Islamist (in any sense) is not necessarily a Jihadist. I wonder whether a Jihadist necessarily must be an Islamist?

It seems to me that people are making the assumption that the subject individual here was associated with some named or organised (after a fashion or more) group - and that doesn't necessarily seem to be the case.