I was just browsing the FW site noticed that back when Armada was published in 2003 the two divisions of GW had a healthy relationship in regards to the use of FW minis in Gothic. Aside from the Tau & the Eldar Haven Spire, all the Forgeworld BFG minis are in Armada. The Tau were released after Armada was published so it makes sense.

Now granted in 2003 SG I think had a slightly larger staff and was stil producing near 'full' releases at the time.