This is not the “typical” experience here and I have no idea what may have happened. I would probably call Martin and tell him what you mentioned here and see what he says.
EQ3 Head Office Told me that these are 100% natural Talalay Latex. They are specially made for EQ3 by Natura.
As you can see from this thread and from this thread … I agree with you about the truth behind their marketing.
They are now wholesale only and their mattresses are available in Calgary from http://www.dormirbedandfoam.ca/. they use Talalay latex (blended), Energia (5 lb polyfoam) and 8 lb memory foam along with 1.8 lb base layers in various configurations and layerings. Some very interesting combinations but no Dunlop.
There is one more outlet in the Calgary list (The Mattress Maker) that uses Dunlop latex which may be worth looking at. I would tend to call Martin at Halstead though to see what they have available that “fits” what you are looking for and to find out what may have happened when you visited them.