Well, I've not actually used my servitor horse in a game yet, but as many pointed out, the previous head wasn't a great shape for the horse, so I've been sculpting a new head this last month.
(http://lh4.ggpht.com/_orTPwyJEoiY/TSHDfxEbAYI/AAAAAAAACAk/NZMvRgLNMLc/s800/DSCF4888.JPG)
(http://lh6.ggpht.com/_orTPwyJEoiY/TSHDf2q1iwI/AAAAAAAACAg/rDqB0Hxk80s/s800/DSCF4887.JPG)
It still doesn't look great, but it is a more equine shape, and I find the more I sculpt the easier it becomes. I've also done a little work on my Hrud, snazzing up his robes slightly.
(http://lh4.ggpht.com/_orTPwyJEoiY/TSHDfofwJVI/AAAAAAAACAc/mGiOWOHiq0o/s800/DSCF4886.JPG)
sorry about the dark there, although I think it suits him.
That's really pretty good! Horses are far from easy to sculpt. I think the nose needs to be a little wider and the mouth cut in a bit deeper, but you've done a really excellent job on a very original idea.
R.