What I want to know Ted though is this. If someone in a Muslim country says they accept Jesus as their saviour, even the Trinity, even the 28 FBs of the SDA Church, but then says he or she also believes in the Qu'ran and Muhamed as a prophet, will that person be saved? Can that person be an "Adventist" or "Christian". You seem to say no - why?

You seem to say such a person couldn't possibly exist - that it would be an impossibility - because of how Islam is usually interpreted by most Islamic scholars. But such people do exist Ted - they are real people. 

And they don't follow the views of these Saudi or Iranian Muslim theologians. They reject the Haddith for the Bible. 

They might have a fringe view of Islam, so much so most don't consider them "real" Muslims. "Messianic-Muslims" so-named might well belong to a "different religion" than Islam. But they used to say that about Adventists too, trying to be "Jews" and not being "real Christians" as we upheld aspects of the Torah.