Nat Geo says upfront that their testing isn't being done for genealogical purposes but my point is that all of the companies are getting the same autosomal data and that it is probably much easier to make the sort of broad interpretations that Nat Geo makes vs. the ones that Ancestry.com is presumably attempting to make with regard to a guess as to our more recent ancestry. I suspect that their ability to draw conclusions as to our more recent ancestry isn't as good as we are hoping. We probably shouldn't expect them to be able to say that we have French vs. German vs. Swiss ancestry rather than just Central European.
What could I realistically expect them to come up with since I have ancestors from England, Wales, Ireland, Ulster Ireland and Scotland? If they gave me anything other than just a catch-all of British Isles, I would consider their result as being suspect.