I don't but I have just ordered a Kallistra castle and at the same time gotten some Treemen and a pack of 30 skeletons command figures.
Oddly the skeletons vary in size a bit, but then I realized GW's are the same. The Kallistra Undead on horse fits perfectly with GW's and are somewhat smaller. But those on foot are bigger than GWs.
So what I am trying to say is that even GW does not have one scale as the Empire Cavalry is bigger than footmen.
You may just want to order a couple of packs from Kallistra and see for yourself.
