There's at least one review on this forum from a member relating to a hunt last year. One Kudu and two gemsboks if I remember correctly. All nice animals too - you may want to PM the guy that made that post as he's on here regularly.
I've spoken to Louis (Spiral Horn Safaris) over the phone and had a few emails back and forth, and he seems like a really good guy, although I've never hunted with him.