I just received the Magog the Hill Giant (FM18) figure from Copplestone Castings.
This is classified as a 15mm figure but actually has the perfect size and posture to be used as a 10mm giant for Warmaster Orc armies.
….Which is exactly why I ordered this guy…
Below you can see a size comparison picture next to some GW Orcs and Trolls. As you can see it fits perfectly in the 40x20mm base of Warmaster.
As far as I know the height of the GW Giant was also the same, perhaps a bit thinner so the Copplestone one seems more impressive.
Hope this helps!