While I think these are cool, I felt they are a little overpriced. So I figured I could come up with some proxies to fill in. Digging through my plastic D&D figures I found 3 suitable models. Dire Wolf from the Dungeons of Dread series. Luckily I had 3, as buying 3 of eBay would cost as much as the DK's above.
Here is what the model looks like before. Rummaging through my unpainted Empire box and found 3 knights that needed mounts and after a little exacto knife work, they fit on the back of the wolf quite nicely. And here's what I came up with, my Wolf Knights
Cheers, Xin